Question

how many 5cm cubes can be cut from a cube whose edge is 20cm

Answer 1

Volume plays here.

Volume of the big cube is=20×20×20=8000Cm^3

Volume of the small cube is 5×5×5=125 cm^3.

So number of cubes will be 8000/125=64nos.

Answer is 64nos.

Thanks.
Tripathy