हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Find the Cube-root of 343 512

Advertisements
Advertisements

प्रश्न

Find the cube-root of `343/512`

योग
Advertisements

उत्तर

`(343)/(512)`

= `root(3)(343/512)`

= `sqrt(7 xx 7 xx 7)/sqrt(8 xx 8 xx 8)`

= `(7)/(8)`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Cubes and Cube Roots - Exercise 4 (B) [पृष्ठ ५१]

APPEARS IN

सेलिना Concise Mathematics [English] Class 8 ICSE
अध्याय 4 Cubes and Cube Roots
Exercise 4 (B) | Q 2.3 | पृष्ठ ५१

संबंधित प्रश्न

Find the smallest number by which the following number must be multiplied to obtain a perfect cube.

256


Parikshit makes a cuboid of plasticine of sides 5cm, 2cm, 5cm. How many such cuboids will he need to form a cube?


What is the smallest number by which the following number must be multiplied, so that the products is perfect cube?

675


What is the smallest number by which the following number must be multiplied, so that the products is perfect cube?

 35721


By which smallest number must the following number be divided so that the quotient is a perfect cube?

675


Prove that if a number is trebled then its cube is 27 times the cube of the given number.

 

By taking three different values of n verify the truth of the following statement:

If n is odd, then n3 is also odd.


By taking three different values of n verify the truth of the following statement:

If n leaves remainder 1 when divided by 3, then n3 also leaves 1 as remainder when divided by 3.


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

8640 is not a perfect cube.


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

 No cube can end with exactly two zeros.


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

If a and b are integers such that a2 > b2, then a3 > b3.


Find the cube root of the following natural number 1157625 .


Three numbers are in the ratio 1 : 2 : 3. The sum of their cubes is 98784. Find the numbers.


Making use of the cube root table, find the cube root
1346.


Find if the following number is a perfect cube?
24000


Find the cube-root of 343


Find the cube-root of -512


Find the cube-root of -0.512


Find the cube-root of 700 × 2 × 49 × 5.


Difference of two perfect cubes is 189. If the cube root of the smaller of the two numbers is 3, find the cube root of the larger number.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×