Question

The total surface area of a cube is 384 cm${}^2$. Calculate the side of the cube.

Answer 1

The total surface area of cube = $6\left(l^2\right)$
Hence $384=6\left(l^2\right)$ $⟹$ $l^2$ = $\frac{384}{6}$ = $64c{m}^2$ $\Rightarrow$ $l=$ $\sqrt{64}$ = $8m$
Thus, the side of the cube is $8m$.