Let S and S' be two cylinders having same height. If the diameter of S is two times that of S' , then the curved surface area of S is
1
twice that of S'
2
one-fourth that of S'
3
half that of S'
4
4 times that of S'
Let S and S' be two cylinders having same height. If the diameter of S is two times that of S' , then the curved surface area of S is