Question

Find the volume of a cube whose surface area is $384m^2.$

Answer 1

Surface area of a cube $=384m^2$
Let side = a
then $6a^2=384\Rightarrow a^2=\frac{384}{6}=64=(8{)}^2$
$\therefore a=8m$
Now volume $=a^3=(8{)}^3{m}^3=512m^3$