V = \(\frac{1}{2}\)πr²h Multiply both sides by 2 2V = πr²h Divide both sides πh \(\frac{2V}{\pi h}\) = r² Find the square root of both sides \(\sqrt{ \frac{2V}{\pi h} }\) = r Switch the sides to make it easier to read r = \(\sqrt{ \frac{2V}{\pi h} }\)
