Question

The volume of cube is 216 cm cube. If the length of the edge is increased by two times, what should the volume of new cube?

Answer 1

`1728` cubic cm will be the new volume.

Explanation:

Recall that the volume of a cube is given by

`v = l^3`

If we substitute `2l` into the expression we see that

`v = (2l)^3 = 8l^3`, so the volume is `8` times the original volume.

Therefore, the new volume will be `8 * 216 = 1728` cubic centimetres.

Hopefully this helps!