The radius of the base of a right circular cylinder is 3cm and its height is 7cm, find the curved surface area.
Let radius and height of the cylinder be r and h, respectively.
So, r=3cm and h=7cm
C.S.A. of cylinder =2πrh
C.S.A. of cylinder=2×227×3×7
C.S.A. of cylinder=132cm2