Solve the Equation

Solve the equation $M=\frac{13r^{2}h}{17}$ for r in terms of M and h. Assume r, M and h are all positive.

• __$r=\frac{13M}{17h}$
• __$r=\sqrt{\frac{13h}{17M}}$
• __$r=\sqrt{\frac{17M}{13h}}$
• __$r=\frac{17M}{13h}$
• __$r=\sqrt{\frac{13M}{17h}}$