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R.D. Sharma solutions for Mathematics [English] Class 8 chapter 3 - Squares and Square Roots [Latest edition]

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R.D. Sharma solutions for Mathematics [English] Class 8 chapter 3 - Squares and Square Roots - Shaalaa.com
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Solutions for Chapter 3: Squares and Square Roots

Below listed, you can find solutions for Chapter 3 of CBSE R.D. Sharma for Mathematics [English] Class 8.


Exercise 3.1Exercise 3.2Exercise 3.3Exercise 3.4Exercise 3.5Exercise 3.6Exercise 3.7Exercise 3.8Exercise 3.9
Exercise 3.1 [Pages 4 - 5]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.1 [Pages 4 - 5]

1.1Page 4

Which of the following numbers are perfect squares?

484

1.2Page 4

Which of the following numbers are perfect squares?

625 

1.3Page 4

Which of the following numbers are perfect squares? 

576 

1.4Page 4

Which of the following numbers are perfect squares? 

 941 

1.5Page 4

Which of the following numbers are perfect squares? 

961 

1.6Page 4

Which of the following numbers are perfect squares? 

 2500 

2.1Page 4

Show that each of the following numbers is a perfect square. Also, find the number whose square is the given number in each case: 

1156 

2.2Page 4

Show that each of the following numbers is a perfect square. Also, find the numer whose square is the given number in each case: 

2025 

2.3Page 4

Show that each of the following numbers is a perfect square. Also, find the number whose square is the given number in each case:

 14641 

 

2.4Page 4

Show that each of the following numbers is a perfect square. Also, find the number whose square is the given number in each case: 

 4761 

3.1Page 4

Find the smallest number by which the given number must bew multiplied so that the product is a perfect square: 

 23805 

3.2Page 4

Find the smallest number by which the given number must bew multiplied so that the product is a perfect square: 

12150 

3.3Page 4

Find the smallest number by which the given number must bew multiplied so that the product is a perfect square: 

7688 

4.1Page 4

Find the smallest number by which the given number must be divided so that the resulting number is a perfect square:

14283 

4.2Page 4

Find the smallest number by which the given number must be divided so that the resulting number is a perfect square: 

1800 

 

4.3Page 4

Find the smallest number by which the given number must be divided so that the resulting number is a perfect square: 

2904

5.01Page 4

Which of the following numbers are perfect square?

11 

5.02Page 4

Which of the following numbers are perfect square? 

12 

5.03Page 4

Which of the following numbers are perfect square?  

16 

5.04Page 4

Which of the following numbers are perfect square?

32 

5.05Page 4

Which of the following numbers are perfect squares? 

 36 

5.06Page 4

Which of the following numbers are perfect square? 

 50 

5.07Page 4

Which of the following numbers are perfect square? 

 64 

5.08Page 4

Which of the following numbers are perfect square? 

79 

5.09Page 4

Which of the following numbers are perfect square? 

81 

5.1Page 4

Which of the following numbers are perfect square? 

111

5.11Page 4

Which of the following numbers are perfect square? 

121 

6.1Page 4

Using prime factorization method, find which of the following numbers are perfect square? 

189, 

6.2Page 4

Using prime factorization method, find which of the following numbers are perfect square?  

225 

6.3Page 4

Using prime factorization method, find which of the following numbers are perfect square? 

2048 

6.4Page 4

Using prime factorization method, find which of the following numbers are perfect square? 

343 

6.5Page 4

Using prime factorization method, find which of the following numbers are perfect square? 

441

6.6Page 4

Using prime factorization method, find which of the following numbers are perfect square? 

2916

6.7Page 4

Using prime factorization method, find which of the following numbers are perfect square? 

11025

6.8Page 4

Using prime factorization method, find which of the following numbers are perfect square? 

3549

7.1Page 4

By what number should each of the following numbers be multiplied to get a perfect square ? Also, find the number whose square is the new number. 

8820

 

7.2Page 4

By what number should each of the following numbers be multiplied to get a perfect square ? Also, find the number whose square is the new number. 

3675

7.3Page 4

By what number should each of the following numbers be multiplied to get a perfect square? Also, find the number whose square is the new number. 

605 

7.4Page 4

By what number should each of the following numbers be multiplied to get a perfect square? Also, find the number whose square is the new number. 

2880

7.5Page 4

By what number should each of the following numbers be multiplied to get a perfect square? Also, find the number whose square is the new number.  

 4056

7.6Page 4

By what number should each of the following numbers be multiplied to get a perfect square ? Also, find the number whose square is the new number. 

3468

7.7Page 4

By what number should each of the following numbers be multiplied to get a perfect square ? Also, find the number whose square is the new number. 

7776 

8.1Page 4

By what numbers should each of the following be divided to get a perfect square ? Also, find the number whose square is the new number. 

16562 

8.2Page 4

By what numbers should each of the following be divided to get a perfect square? Also, find the number whose square is the new number. 

 3698

8.3Page 4

By what numbers should each of the following be divided to get a perfect square ? Also, find the number whose square is the new number. 

 5103

8.4Page 4

By what numbers should each of the following be divided to get a perfect square? Also, find the number whose square is the new number. 

 3174

8.5Page 4

By what numbers should each of the following be divided to get a perfect square ? Also, find the number whose square is the new number. 

 1575 

9Page 4

Find the greatest number of two digits which is a perfect square.

 

 

10Page 4

Find the least number of three digits which is perfect square.

 

11Page 5

Find the smallest number by which 4851 must be multiplied so that the product becomes a perfect suqare. 

 

12Page 5

Find the smallest number by which 28812 must be divided so that the quotient becomes a perfect square. 

13Page 5

Find the smallest number by which 1152 must be divided so that it becomes a perfect square. Also, find the number whose square is the resulting number.

Exercise 3.2 [Pages 18 - 20]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.2 [Pages 18 - 20]

1.1Page 18

The following number are not perfect squares. Give reason. 

 1547

1.2Page 18

The following number is  not perfect square. Give reason. 

45743

1.3Page 18

The following number is not perfect square. Give reason.

8948

1.4Page 18

The following number is not perfect square. Give reason. 

333333

2.1Page 18

Show that the following number is not perfect square: 

 9327 

 

2.2Page 18

Show that the following number is not perfect square:

4058 

2.3Page 18

Show that the following number is not perfect square: 

22453 

2.4Page 18

Show that the following number is not perfect square: 

 743522 

3.1Page 18

The square of which of the following number would be an odd number? 

 731 

3.2Page 18

The square of which of the following number would be an odd number? 

3456 

3.3Page 18

The square of which of the following number would be an odd number? 

5559 

3.4Page 18

The square of which of the following number would be an odd number? 

 42008 

4.1Page 19

What will be the units digit of the square of the following number?

52

4.2Page 19

What will be the units digit of the square of the following number? 

977 

4.3Page 19

What will be the units digit of the square of the following number? 

 4583 

4.4Page 19

What will be the units digit of the square of the following number? 

 78367 

4.5Page 19

What will be the units digit of the square of the following number?  

52698 

4.6Page 19

What will be the units digit of the square of the following number? 

 99880 

4.7Page 19

What will be the units digit of the square of the following number? 

 12796

4.8Page 19

What will be the units digit of the square of the following number? 

55555

4.9Page 19

What will be the units digit of the square of the following number?

 53924

5Page 19

From the pattern, we can say that the sum of the first n positive odd numbers is equal to the square of the n-th positive number. Putting that into formula:
1 + 3 + 5 + 7 + ...  n =  n2, where the left hand side consists of n terms. 

6.1Page 19

Observe the following pattern 

22 − 12 = 2 + 1
32 − 22 = 3 + 2
42 − 32 = 4 + 3
52 − 42 = 5 + 4
and find the value of 

1002 − 992

6.2Page 19

Observe the following pattern
22 − 12 = 2 + 1
32 − 22 = 3 + 2
42 − 32 = 4 + 3
52 − 42 = 5 + 4
and find the value of 

 1112 − 1092

6.3Page 19

Observe the following pattern
22 − 12 = 2 + 1
32 − 22 = 3 + 2
42 − 32 = 4 + 3 
52 − 42 = 5 + 4
and find the value of 

992 − 962

7.1Page 19

Which of the following triplets are pythagorean? 

 (8, 15, 17)

7.2Page 19

Which of the following triplet is pythagorean? 

 (18, 80, 82) 

7.3Page 19

Which of the following triplet  pythagorean? 

 (14, 48, 51)

7.4Page 19

Which of the following triplet  pythagorean?  

(10, 24, 26)

7.5Page 19

Which of the following triplet pythagorean? 

(16, 63, 65)

7.6Page 19

Which of the following triplet  pythagorean? 

(12, 35, 38) 

8Page 19

Observe the following pattern 

\[\left( 1 \times 2 \right) + \left( 2 \times 3 \right) = \frac{2 \times 3 \times 4}{3}\] 

\[\left( 1 \times 2 \right) + \left( 2 \times 3 \right) + \left( 3 \times 4 \right) = \frac{3 \times 4 \times 5}{3}\] 

\[\left( 1 \times 2 \right) + \left( 2 \times 3 \right) + \left( 3 \times 4 \right) + \left( 4 \times 5 \right) = \frac{4 \times 5 \times 6}{3}\] 

and find the value of(1 × 2) + (2 × 3) + (3 × 4) + (4 × 5) + (5 × 6)

9.1Page 19

Observe the following pattern \[1 = \frac{1}{2}\left\{ 1 \times \left( 1 + 1 \right) \right\}\]
\[ 1 + 2 = \frac{1}{2}\left\{ 2 \times \left( 2 + 1 \right) \right\}\]
\[ 1 + 2 + 3 = \frac{1}{2}\left\{ 3 \times \left( 3 + 1 \right) \right\}\]
\[1 + 2 + 3 + 4 = \frac{1}{2}\left\{ 4 \times \left( 4 + 1 \right) \right\}\] 

and find the values of  following: 

1 + 2 + 3 + 4 + 5 + ... + 50

9.2Page 19

Observe the following pattern \[1 = \frac{1}{2}\left\{ 1 \times \left( 1 + 1 \right) \right\}\]
\[ 1 + 2 = \frac{1}{2}\left\{ 2 \times \left( 2 + 1 \right) \right\}\]
\[ 1 + 2 + 3 = \frac{1}{2}\left\{ 3 \times \left( 3 + 1 \right) \right\}\]
\[1 + 2 + 3 + 4 = \frac{1}{2}\left\{ 4 \times \left( 4 + 1 \right) \right\}\]and find the values of following:

31 + 32 + ... + 50

10.1Page 20

Observe the following pattern \[1^2 = \frac{1}{6}\left[ 1 \times \left( 1 + 1 \right) \times \left( 2 \times 1 + 1 \right) \right]\]
\[ 1^2 + 2^2 = \frac{1}{6}\left[ 2 \times \left( 2 + 1 \right) \times \left( 2 \times 2 + 1 \right) \right]\]
\[ 1^2 + 2^2 + 3^2 = \frac{1}{6}\left[ 3 \times \left( 3 + 1 \right) \times \left( 2 \times 3 + 1 \right) \right]\]
\[ 1^2 + 2^2 + 3^2 + 4^2 = \frac{1}{6}\left[ 4 \times \left( 4 + 1 \right) \times \left( 2 \times 4 + 1 \right) \right]\] and find the values :  

12 + 22 + 32 + 4+ ... + 102

 

 

10.2Page 20

Observe the following pattern \[1^2 = \frac{1}{6}\left[ 1 \times \left( 1 + 1 \right) \times \left( 2 \times 1 + 1 \right) \right]\]
\[ 1^2 + 2^2 = \frac{1}{6}\left[ 2 \times \left( 2 + 1 \right) \times \left( 2 \times 2 + 1 \right) \right]\]
\[ 1^2 + 2^2 + 3^2 = \frac{1}{6}\left[ 3 \times \left( 3 + 1 \right) \times \left( 2 \times 3 + 1 \right) \right]\]
\[ 1^2 + 2^2 + 3^2 + 4^2 = \frac{1}{6}\left[ 4 \times \left( 4 + 1 \right) \times \left( 2 \times 4 + 1 \right) \right]\] and find the values :  

52 + 62 + 72 + 82 + 92 + 102 + 112 + 122

 

 

11.1Page 20

Which of the following number  square of even number? 

121

 

11.2Page 20

Which of the following number  square of even number? 

 225 

11.3Page 20

Which of the following number is squares of even number ?

256

11.4Page 20

Which of the following number  square of even number?

324 

11.5Page 20

Which of the following number  square of even number? 

1296 

11.6Page 20

Which of the following number are square of even number?

6561

11.7Page 20

Which of the following number  square of even number? 

5476 

11.8Page 20

Which of the following number  square of even number? 

4489

11.9Page 20

Which of the following number  square of even number? 

373758 

12.1Page 20

By just examining the units digit, can you tell which of the following cannot be whole square? 

1026

12.2Page 20

By just examining the unit digis, can you tell which of the following cannot be whole squares? 

 1028

12.3Page 20

By just examining the unit digit, can you tell which of the following cannot be whole square? 

1024 

12.4Page 20

By just examining the unit digit, can you tell which of the following cannot be whole square? 

 1022 

12.5Page 20

By just examining the unit digit, can you tell which of the following cannot be whole square? 

1023

12.6Page 20

By just examining the unit digit, can you tell which of the following cannot be whole square? 

 1027 

13Page 20

Write five numbers for which you cannot decide whether they are squares. 

14Page 20

Write five numbers which you cannot decide whether they are square just by looking at the unit's digit.

15.1Page 20

Write true (T) or false (F) for the following statement. 

The number of digits in a square number is even. 

15.2Page 20

Write true (T) or false (F) for the following statement.

 The square of a prime number is prime. 

15.3Page 20

Write true (T) or false (F) for the following statement. 

 The sum of two square numbers is a square number. 

15.4Page 20

Write true (T) or false (F) for the following statement.  

The difference of two square numbers is a square number 

15.5Page 20

Write true (T) or false (F) for the following statement. 

The product of two square numbers is a square number.

15.6Page 20

Write true (T) or false (F) for the following statement. 

No square number is negative.

15.7Page 20

Write true (T) or false (F) for the following statement .

There is no square number between 50 and 60.

15.8Page 20

Write true (T) or false (F) for the following statement. 

There are fourteen square number upto 200.

Exercise 3.3 [Page 32]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.3 [Page 32]

1.1Page 32

Find the squares of the following numbers using column method. Verify the result by finding the square using the usual multiplication: 

 25

1.2Page 32

Find the squares of the following numbers using column method. Verify the result by finding the square using the usual multiplication: 

37 

1.3Page 32

Find the squares of the following numbers using column method. Verify the result by finding the square using the usual multiplication: 

 54 

1.4Page 32

Find the squares of the following numbers using column method. Verify the result by finding the square using the usual multiplication: 

71 

 

1.5Page 32

Find the squares of the following numbers using column method. Verify the result by finding the square using the usual multiplication: 

96 

2.1Page 32

Find the squares of the following numbers using diagonal method: 

98

2.2Page 32

Find the squares of the following numbers using diagonal method: 

 273

2.3Page 32

Find the squares of the following numbers using diagonal method: 

348 

2.4Page 32

Find the squares of the following numbers using diagonal method: 

295

2.5Page 32

Find the squares of the following numbers using diagonal method:  

 171 

3.1Page 32

Find the square of the following number: 

127 

3.2Page 32

Find the square of the following number: 

503

3.3Page 32

Find the square of the following number: 

451

3.4Page 32

Find the square of the following number: 

862

3.5Page 32

Find the square of the following number: 

265 

4.1Page 32

Find the square of the following number: 

425 

4.2Page 32

Find the square of the following number: 

 575

4.3Page 32

Find the square of the following number: 

 405

4.4Page 32

Find the square of the following number:  

205 

4.5Page 32

Find the square of the following number: 

95 

4.6Page 32

Find the square of the following number: 

745 

4.7Page 32

Find the square of the following number: 

512 

4.8Page 32

Find the square of the following number: 

995 

5.1Page 32

Find the squares of the following numbers using the identity (a + b)2 = a2 + 2ab + b2:  

 405

5.2Page 32

Find the squares of the following number using the identity (a + b)2 = a2 + 2ab + b2:  

 510 

5.3Page 32

Find the squares of the following number using the identity (a + b)2 = a2 + 2ab + b

1001 

5.4Page 32

Find the square of the following numbers using the identity (a + b)2 = a2 + 2ab + b2

 209 

5.5Page 32

Find the squares of the following numbers using the identity (a + b)2 = a2 + 2ab + b2

605

6.1Page 32

Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2

395 

6.2Page 32

Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2:  

 995 

6.3Page 32

Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2

495 

6.4Page 32

Find the squares of the following numbers using the identity (a − b)2 = a2 − 2ab + b2

 498 

6.5Page 32

Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2:  

99 

6.6Page 32

Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2:  

999

6.7Page 32

Find the square of the following number using the identity (a − b)2 = a2 − 2ab + b2:  

599

7.1Page 32

Find the squares of the following numbers by visual method: 

52

7.2Page 32

Find the square of the following number by visual method:  

95 

7.3Page 32

Find the square of the following number by visual method:

 505 

7.4Page 32

Find the square of the following number by visual method:

 702

7.5Page 32

Find the square of the following number by visual method: 

99 

Exercise 3.4 [Page 38]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.4 [Page 38]

1.1Page 38

Write the possible unit's digits of the square root of the following numbers\. Which of these number is odd square root? 

 9801 

1.2Page 38

Write the possible unit's digits of the square root of the following number. Which of these number is odd square root?

 99856 

1.3Page 38

Write the possible unit's digit of the square root of the following number. Which of these number  odd square root?  

998001 

1.4Page 38

Write the possible unit's digit of the square root of the following number. Which of these number is odd square root? 

657666025 

2.01Page 38

Find the square root of each of the following by prime factorization. 

441 

2.02Page 38

Find the square root the following by prime factorization. 

 196 

2.03Page 38

Find the square root  the following by prime factorization. 

529 

2.04Page 38

Find the square root  the following by prime factorization. 

 1764 

2.05Page 38

Find the square root the following by prime factorization. 

1156

2.06Page 38

Find the square root  the following by prime factorization. 

 4096 

2.07Page 38

Find the square root the following by prime factorization.  

 7056

2.08Page 38

Find the square root  the following by prime factorization.

 8281

2.09Page 38

Find the square rootthe following by prime factorization.  

11664 

2.1Page 38

Find the square root  the following by prime factorization.  

 47089

2.11Page 38

Find the square root the following by prime factorization. 

24336 

2.12Page 38

Find the square root  the following by prime factorization. 

 190969

2.13Page 38

Find the square root the following by prime factorization. 

586756 

2.14Page 38

Find the square root  the following by prime factorization. 

27225

2.15Page 38

Find the square root the following by prime factorization. 

3013696

3Page 38

Find the smallest number by which 180 must be multiplied so that it becomes a perfect square. Also, find the square root of the perfect square so obtained.

4Page 38

Find the smallest number by which 147 must be multiplied so that it becomes a perfect square. Also, find the square root of the number so obtained.

5Page 38

Find the smallest number by which 3645 must be divided so that it becomes a perfect square. Also, find the square root of the resulting number. 

 

6Page 38

Find the smallest number by which 1152 must be divided so that it becomes a perfect square. Also, find the square root of the number so obtained.

7Page 38

The product of two numbers is 1296. If one number is 16 times the other, find the numbers.

8Page 38

A welfare association collected Rs 202500 as donation from the residents. If each paid as many rupees as there were residents, find the number of residents.

9Page 38

A society collected Rs 92.16. Each member collected as many paise as there were members. How many members were there and how much did each contribute? 

10Page 38

A school collected Rs 2304 as fees from its students. If each student paid as many paise as there were students in the school, how many students were there in the school? 

11Page 38

The area of a square field is 5184 cm2. A rectangular field, whose length is twice its breadth has its perimeter equal to the perimeter of the square field. Find the area of the rectangular field.

12.1Page 38

Find the least square number, exactly divisible by each one of the numbers:
(i) 6, 9, 15 and 20

12.2Page 38

Find the least square number, exactly divisible by each one of the number: 

8, 12, 15 and 20

13Page 38

Find the square roots of 121 and 169 by the method of repeated subtraction. 

 

14.1Page 38

Write the prime factorization of the following number and hence find their square root. 

 7744

14.2Page 38

Write the prime factorization of the following number and hence find their square root. 

9604 

14.3Page 38

Write the prime factorization of the following number and hence find their square root. 

5929 

14.4Page 38

Write the prime factorization of the following number and hence find their square root. 

7056

15Page 38

The students of class VIII of a school donated Rs 2401 for PM's National Relief Fund. Each student donated as many rupees as the number of students in the class. Find the number of students in the class. 

16Page 38

A PT teacher wants to arrange maximum possible number of 6000 students in a field such that the number of rows is equal to the number of columns. Find the number of rows if 71 were left out after arrangement.

Exercise 3.5 [Pages 43 - 44]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.5 [Pages 43 - 44]

1.01Page 43

Find the square  of the following by long division method: 

12544 

 

 

1.02Page 43

Find the square root  the following by long division method: 

97344

1.03Page 43

Find the square root  the following by long division method: 

 286225 

1.04Page 43

Find the square root the following by long division method: 

390625

1.05Page 43

Find the square root  the following by long division method: 

363609

1.06Page 43

Find the square root the following by long division method:

974169

1.07Page 43

Find the square root the following by long division method: 

120409

1.08Page 43

Find the square root  the following by long division method: 

 1471369

1.09Page 43

Find the square root  the following by long division method: 

291600

1.1Page 43

Find the square root the following by long division method: 

9653449

1.11Page 43

Find the square root the following by long division method:  

1745041

 

1.12Page 43

Find the square root of each of the following by long division method: 

 4008004

1.13Page 43

Find the square root  the following by long division method: 

20657025

1.14Page 43

Find the square root  the following by long division method:

152547201

1.15Page 43

Find the square root the following by long division method: 

20421361

 

1.16Page 43

Find the square root the following by long division method: 

 62504836

1.17Page 43

Find the square root the following by long division method: 

 82264900

1.18Page 43

Find the square root of the following by long division method: 

3226694416 

1.19Page 43

Find the square root the following by long division method:

6407522209

1.2Page 43

Find the square root of the following by long division method: 

3915380329

2.1Page 43

Find the least number which must be subtracted from the following numbers to make them a perfect square: 

 2361

2.2Page 43

Find the least number which must be subtracted from the following numbers to make them a perfect square:

 194491

 

2.3Page 43

Find the least number which must be subtracted from the following numbers to make them a perfect square: 

26535

2.4Page 43

Find the least number which must be subtracted from the following numbers to make them a perfect square:

16160

 

2.5Page 43

Find the least number which must be subtracted from the following numbers to make them a perfect square: 

4401624

3.1Page 43

Find the least number which must be added to the following numbers to make them a perfect square:

 5607

3.2Page 43

Find the least number which must be added to the following numbers to make them a perfect square:

4931 

 

3.3Page 43

Find the least number which must be added to the following numbers to make them a perfect square:

4515600

3.4Page 43

Find the least number which must be added to the following numbers to make them a perfect square:

37460

3.5Page 43

Find the least number which must be added to the following numbers to make them a perfect square:

506900

4Page 43

Find the greatest number of 5 digits which is a perfect square.

 

5Page 43

Find the least number of 4 digits which is a perfect square.

6Page 43

Find the least number of six digits which is a perfect square.

 

7Page 44

Find the greatest number of 4 digits which is a perfect square.

8Page 44

A General arranges his soldiers in rows to form a perfect square. He finds that in doing so, 60 soldiers are left out. If the total number of soldiers be 8160, find the number of soldiers in each row.

9Page 44

The area of a square field is 60025 m2. A man cycles along its boundary at 18 km/hr. In how much time will he return at the starting point?

10Page 44

The cost of levelling and turfing a square lawn at Rs 2.50 per m2 is Rs 13322.50. Find the cost of fencing it at Rs 5 per metre. 

11Page 44

Find the greatest number of three digits which is a perfect square.

 

12Page 44

Find the smallest number which must be added to 2300 so that it becomes a perfect square.

Exercise 3.6 [Pages 48 - 49]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.6 [Pages 48 - 49]

1.01Page 48

Find the square root of:

\[\frac{441}{961}\] 

1.02Page 48

Find the square root of:

\[\frac{324}{841}\]

1.03Page 48

Find the square root of:

\[4\frac{29}{29}\]

1.04Page 48

Find the square root of:

\[2\frac{14}{25}\]

1.05Page 48

Find the square root of:

\[23\frac{26}{121}\]

1.06Page 48

Find the square root of:

\[23\frac{26}{121}\]

1.07Page 48

Find the square root of:

\[25\frac{544}{729}\]

1.08Page 48

Find the square root of:

\[75\frac{46}{49}\]

1.09Page 48

Find the square root of:

\[3\frac{942}{2209}\]

1.1Page 48

Find the square root of:

\[3\frac{334}{3025}\]

1.11Page 48

Find the square root of:

\[21\frac{2797}{3364}\]

1.12Page 48

Find the square root of:

\[38\frac{11}{25}\]

1.13Page 48

Find the square root of:

\[23\frac{394}{729}\]

1.14Page 48

Find the square root of:

\[21\frac{51}{169}\]

1.15Page 48

Find the square root of:

\[10\frac{151}{225}\]

 

2.1Page 48

Find the value of:

\[\frac{\sqrt{80}}{\sqrt{405}}\]

2.2Page 48

Find the value of:

\[\frac{\sqrt{441}}{\sqrt{625}}\]

 

2.3Page 48

Find the value of:

\[\frac{\sqrt{1587}}{\sqrt{1728}}\]

2.4Page 48

Find the value of:

`sqrt72 xx sqrt338`

2.5Page 48

Find the value of:

\[\sqrt{45} \times \sqrt{20}\]

3Page 48

The area of a square field is \[80\frac{244}{729}\] square metres. Find the length of each side of the field.

4Page 49

The area of a square field is \[30\frac{1}{4} m^2 .\] Calculate the length of the side of the square.

5Page 49

Find the length of a side of a square playground whose area is equal to the area of a rectangular field of diamensions 72 m and 338 m. 

Exercise 3.7 [Page 52]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.7 [Page 52]

1Page 52

Find the square root in decimal form:
84.8241

2Page 52

Find the square root in decimal form:
0.7225

3Page 52

Find the square root in decimal form:
0.813604

4Page 52

Find the square root in decimal form:
0.00002025

5Page 52

Find the square root in decimal form:
150.0625 

6Page 52

Find the square root in decimal form:
225.6004

7Page 52

Find the square root in decimal form:
3600.720036 

8Page 52

Find the square root in decimal form:
236.144689

9Page 52

Find the square root in decimal form:
0.00059049 

10Page 52

Find the square root in decimal form:
176.252176

11Page 52

Find the square root in decimal form:
9998.0001

12Page 52

Find the square root in decimal form:
0.00038809

13Page 52

What is that fraction which when multiplied by itself gives 227.798649?

 

14Page 52

The area of a square playground is 256.6404 square metres. Find the length of one side of the playground.

15Page 52

What is the fraction which when multiplied by itself gives 0.00053361?

16.1Page 52

Simplify: 

`(sqrt59.29-sqrt5.29)/(sqrt59.29+sqrt5.29)`

 

16.2Page 52

Simplify:

`(sqrt0.2304+sqrt0.1764)/(sqrt0.2304-sqrt0.1764)`

17Page 52

Evaluate   `sqrt(50625)`and hence find the value of `sqrt506.25+sqrt5.0625`

18Page 52

Find the value of `sqrt (103.0225)`nd hence find the value of

`sqrt(10.302.25)` 

`sqrt(1.030225)`

Exercise 3.8 [Pages 56 - 57]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.8 [Pages 56 - 57]

1.01Page 56

Find the square root the following correct to three places of decimal.

1.02Page 56

Find the square root the following correct to three places of decimal. 

7

1.03Page 56

Find the square root  the following correct to three places of decimal. 

17

1.04Page 56

Find the square root  the following correct to three places of decimal. 

20

1.05Page 56

Find the square root  the following correct to three places of decimal.

 66

1.06Page 56

Find the square root  the following correct to three places of decimal.

 427

1.07Page 56

Find the square root  the following correct to three places of decimal. 

1.7

1.08Page 56

Find the square root the following correct to three places of decimal. 

23.1

1.09Page 56

Find the square root the following correct to three places of decimal. 

 2.5

1.1Page 56

Find the square root  the following correct to three places of decimal.

 237.615

1.11Page 56

Find the square root  the following correct to three places of decimal. 

15.3215

1.12Page 56

Find the square root the following correct to three places of decimal. 

 0.9

 

1.13Page 56

Find the square root  the following correct to three places of decimal.

 0.1

1.14Page 56

Find the square root the following correct to three places of decimal. 

0.016

1.15Page 56

Find the square root the following correct to three places of decimal. 

 0.00064

 

1.16Page 56

Find the square root  the following correct to three places of decimal. 

0.019

1.17Page 56

Find the square root the following correct to three places of decimal. 

`7/8`

1.18Page 56

Find the square root  the following correct to three places of decimal. 

`5/12` 

1.19Page 56

Find the square rootthe following correct to three places of decimal. 

`2 1/2`

1.2Page 56

Find the square root  the following correct to three places of decimal. 

`287 5/8` 

 

2Page 57

Find the square root of 12.0068 correct to four decimal places.

 

3Page 57

Find the square root of 11 correct to five decimal places.

 

4.1Page 57

Given that: \[\sqrt{2} = 1 . 414, \sqrt{3} = 1 . 732, \sqrt{5} = 2 . 236 \text { and }\sqrt{7} = 2 . 646,\] evaluate  the following: 

\[\sqrt{\frac{144}{7}}\] 

4.2Page 57

Given that: \[\sqrt{2} = 1 . 414, \sqrt{3} = 1 . 732, \sqrt{5} = 2 . 236 \text{ and } \sqrt{7} = 2 . 646,\]evaluate the following: 

\[\sqrt{\frac{2500}{3}}\]

5.1Page 57

Given that: 

\[\sqrt{2} = 1 . 414, \sqrt{3} = 1 . 732, \sqrt{5} = 2 . 236 \text{ and } \sqrt{7} = 2 . 646,\]ind the square roots of the following: 

\[\frac{196}{75}\]

5.2Page 57

Given that: 

\[\sqrt{2} = 1 . 414, \sqrt{3} = 1 . 732, \sqrt{5} = 2 . 236 \text{ and } \sqrt{7} = 2 . 646,\]  find the square roots of the following: 

\[\frac{400}{63}\]

5.3Page 57

Given that: \[\sqrt{2} = 1 . 414, \sqrt{3} = 1 . 732, \sqrt{5} = 2 . 236 \text{ and } \sqrt{7} = 2 . 646,\] find the square roots of the following:

\[\frac{150}{7}\]

5.4Page 57

Given that: 

\[\sqrt{2} = 1 . 414, \sqrt{3} = 1 . 732, \sqrt{5} = 2 . 236 \text{ and } \sqrt{7} = 2 . 646,\] 

\[\frac{256}{5}\]

5.5Page 57

Given that: \[\sqrt{2} = 1 . 414, \sqrt{3} = 1 . 732, \sqrt{5} = 2 . 236 \text{ and } \sqrt{7} = 2 . 646,\]  find the square root of the following:

\[\frac{25}{50}\] 

Exercise 3.9 [Page 61]

R.D. Sharma solutions for Mathematics [English] Class 8 3 Squares and Square Roots Exercise 3.9 [Page 61]

1Page 61

Using square root table, find the square root

2Page 61

Using square root table, find the square root
15 

3Page 61

Using square root table, find the square root
74 

4Page 61

Using square root table, find the square root
82 

5Page 61

Using square root table, find the square root
198 

6Page 61

Using square root table, find the square root
540 

7Page 61

Using square root table, find the square root
8700

 

8Page 61

Using square root table, find the square root
3509 

9Page 61

Using square root table, find the square root
6929 

10Page 61

Using square root table, find the square root
25725 

11Page 61

Using square root table, find the square root
1312 

 

12Page 61

Using square root table, find the square root
4192 

13Page 61

Using square root table, find the square root
4955 

14Page 61

Using square root table, find the square root \[\frac{99}{144}\] 

15Page 61

Using square root table, find the square root \[\frac{57}{169}\] 

16Page 61

Using square root table, find the square root \[\frac{101}{169}\] 

17Page 61

Using square root table, find the square root
13.21 

18Page 61

Using square root table, find the square root 

19Page 61

Using square root table, find the square root
110 

20Page 61

Using square root table, find the square root
1110 

21Page 61

Using square root table, find the square root
11.11

22Page 61

The area of a square field is 325 m2. Find the approximate length of one side of the field. 

23Page 61

Find the length of a side of a sqiare, whose area is equal to the area of a rectangle with sides 240 m and 70 m. 

Solutions for 3: Squares and Square Roots

Exercise 3.1Exercise 3.2Exercise 3.3Exercise 3.4Exercise 3.5Exercise 3.6Exercise 3.7Exercise 3.8Exercise 3.9
R.D. Sharma solutions for Mathematics [English] Class 8 chapter 3 - Squares and Square Roots - Shaalaa.com

R.D. Sharma solutions for Mathematics [English] Class 8 chapter 3 - Squares and Square Roots

Shaalaa.com has the CBSE Mathematics Mathematics [English] Class 8 CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. R.D. Sharma solutions for Mathematics Mathematics [English] Class 8 CBSE 3 (Squares and Square Roots) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. R.D. Sharma textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Mathematics [English] Class 8 chapter 3 Squares and Square Roots are Properties of Square Numbers, Some More Interesting Patterns of Square Number, Square Root of Decimal Numbers, Concept of Square Number, Finding the Square of a Number, Concept of Square Roots, Finding Square Root Through Repeated Subtraction, Finding Square Root Through Prime Factorisation, Finding Square Root by Division Method, Estimating Square Root.

Using R.D. Sharma Mathematics [English] Class 8 solutions Squares and Square Roots exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in R.D. Sharma Solutions are essential questions that can be asked in the final exam. Maximum CBSE Mathematics [English] Class 8 students prefer R.D. Sharma Textbook Solutions to score more in exams.

Get the free view of Chapter 3, Squares and Square Roots Mathematics [English] Class 8 additional questions for Mathematics Mathematics [English] Class 8 CBSE, and you can use Shaalaa.com to keep it handy for your exam preparation.

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