The volume of a cylinder is 250 cubic centimeters, the side area is 100! Find the radius

The volume of a cylinder is 250 cubic centimeters, the side area is 100! Find the radius

2πRh=100
Rh=100/(2π)
πR*Rh=250
That is, π R * (100 / 2 π) = 250
R=50
A: the radius is 50cm