Question

Find the edge of a cube, whose surface area is $432m^2$.

Answer 1

Surface area of cube $=432c{m}^2$
Let $a$ be the edge of a cube
We know that,
Total surface area of cube $=6a^2$
$\Rightarrow 6a^2=432$
$\Rightarrow a^2=72$
$\Rightarrow a=6\sqrt{2}m$
Hence, the edge of a cube is $6\sqrt{2}m.$