Monday, 22 September 2025

REVISION PAPER CLASS- VIII

CUBE ROOTS 

1) Find the cube root of 
a) 6859 b) 17576 c) 1728

2) Find the smallest number by which the number must be multiplied so that the the number is a perfect cube
a) 120393 b) 3087

3) Find the smallest number by which the number must be divided so that the the number is a perfect cube
a) 33275 b) 29160

4) By what smallest number should 55125 be multiplied so that the product becomes a perfect cube? Also find the cube root of the product.

5) Divide 259875 by the smallest number so that the quotient is a perfect cube. Also find the cube root of the quotient.

6) Find the cube root of (-512).

7) Evaluate: a) ³√(27 x 64) 
b) ³√(125(-64)).
c) ³√(216/729)
d) ³√(-125/343).

8) Find the cube root of 
a) 0.216
b) 9.261

9) The volume of a cube is 5832 cm³. Find the length of its side.

10) Three numbers are in the ratio 1:2:3. The sum of their cubes is 7776. Find the numbers.

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