Question

How many cubes each of side 0.5 cm are required to build a cube of volume of $8c{m}^3$?
A. 32
B. 16
C. 64
D. 48
[1 mark]

Answer 1

Volume of a cube $=(\text{Side}{)}^3$
$\because$ Side of cube = 0.5 cm
$\therefore$ Volume of the cube $=(0.5{)}^3=0.125c{m}^3$
[0.5 mark]

The number of cubes required to make volume of $8c{m}^3$ cube $=\frac{8}{0.125}=\frac{8000}{125}=64\text{cubes}$
[0.5 mark]