Question

How many 5cm cubes can be made from a cube of edge 30 cm?

Answer 1

No. of 5cm cubes that can be cut =
volume of 20cm cube /volume of 5cm cube
= 20^3/5^3
= 20×20×20/5×5×5
=4×4×4
= 64


Therefore 64 cubes can be cut off