मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

Give an algebraic equation for the following statement: “The difference between the area and perimeter of a rectangle is 20”.

Advertisements
Advertisements

प्रश्न

Give an algebraic equation for the following statement:

“The difference between the area and perimeter of a rectangle is 20”.

बेरीज
Advertisements

उत्तर

Let the length of a rectangle = l and breadth = b then Area = Ib, Perimeter = 2(l + b)

Area – Perimeter = 20

∴ Ib – 2(I + b)

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Algebra - Exercise 3.4 [पृष्ठ ६९]

APPEARS IN

सामाचीर कलवी Mathematics - Term 1 [English] Class 7 TN Board
पाठ 3 Algebra
Exercise 3.4 | Q 9 | पृष्ठ ६९

संबंधित प्रश्‍न

Get the algebraic expression in the following case using variables, constants and arithmetic operations.

Number 5 added to three times the product of numbers m and n.


Factorize x( x - 2)( x - 4) + 4x - 8


Factorize a2 - b2 + 2bc - c2


Factorize a2 + 2ab + b2 - c2


Factorize `x^2 + 2sqrt3x - 24`


Factorize the following expressions:

p3 + 27


Factorize the following expressions:

32a3 + 108b3


Factorize the following expressions:

(a - 2b)3 - 512b3


Factorize the following expressions:

`a^3 - 1/a^3 - 2a + 2/a`


If x − y = 7 and xy = 9, find the value of x2 + y2


Multiply: 9x2 + 25y2 + 15xy + 12x − 20y + 16 by 3x − 5y + 4 


The factors of 8a3 + b3 − 6ab + 1 are


Separate the constants and variables from the following :

`-7,7+"x",7"x"+"yz",sqrt5,sqrt("xy"),(3"yz")/8,4.5"y"-3"x",`

8 −5, 8 − 5x, 8x −5y × p and 3y2z ÷ 4x


Write the number of the term of the following polynomial.

23 + a x b ÷ 2


Evaluate: (4m - 2)(m2 + 5m - 6) 


Divide: 9a4b - 15a3b2 + 12a2b3 by - 3a2


Divide: 8a2 + 4a - 60 by 2a - 5 


The area of a rectangle is 6x2 – 4xy – 10y2 square unit and its length is 2x + 2y unit. Find its breadth.


Divide: 6x2 - xy - 35y2 by 2x - 5y 


Match Column I with Column II in the following:

Column I Column II
1. The difference of 3 and a number squared (a) 4 – 2x
2. 5 less than twice a number squared (b) n2 – 3
3. Five minus twice the square of a number (c) 2n2 – 5
4. Four minus a number multiplied by 2 (d) 5 – 2n2
5. Seven times the sum of a number and 1 (e) 3 – n2
6. A number squared plus 6 (f) 2(n + 6)
7. 2 times the sum of a number and 6 (g) 7(n + 1)
8. Three less than the square of a number (h) n2 + 6

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×