Question

Solve for r. What is r equal to? (Hint: Notice that r is cubed, not squared.)

Answer 1

$V=\frac{4}{3}\pi r^3$

we need to clear r

$\begin{gathered} V=\frac{4}{3}\pi r^3 \\ 3V=4\pi r^3 \\ \frac{3V}{4\pi}=r^3 \\ r=\sqrt[3]{\frac{3V}{4\pi}} \end{gathered}$