Question

V=(1/3)pie r^2h solve for r

Answer 1

V = $\frac{1}{3}$πr²h   Mutiply both sides by 3 to cancel out the fraction
3V = πr²h   Divide both sides by πh
$\frac{3V}{\pi h}$ = r²   Find the square root of both sides
$\sqrt{ \frac{3V}{\pi h} }$ = r   Switch the sides to make it easier to read
r = $\sqrt{ \frac{3V}{\pi h} }$ 

Answer 2

Base on my own calculation and the given formula, I would say that the transported formula of the said equation that could get the value of r is r = sqrt of (3v/ pie *H). I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification