Question

Tick (✓) the correct answer:
If each side of a cube is doubled then its volume
(a) is doubled
(b) becomes 4 times
(c) becomes 6 times
(d) becomes 8 times

Answer 1

(d) If each side of the cube is doubled, its volume becomes 8 times the original volume.

Let the original side be a units.
Then original volume = a³ cubic units
Now, new side = 2a units
Then new volume = (2a)³ sq units = 8 a³cubic units
Thus, the volume becomes 8 times the original volume.