Question

Calculate the surface area of a cube of edge $4cm$ . what is the volume?

Answer 1

Given that side $a=4cm$

We know that surface area of a cube $=6a^2$

$$\begin{gathered} =6\times 4\times 4 \\ =96c{m}^2 \end{gathered}$$

Volume of a cube$=a^3$

$$\begin{gathered} =4\times 4\times 4 \\ =64c{m}^3 \end{gathered}$$

Hence, the required volume of cube is $64c{m}^3$.