Question

the curved surface area of a right circular cylinder of radius 2r and height is 2n is.​

Answer 1

Answer:

The curved surface area of a right circular cylinder of radius 2r and height 2h is opyions are- 44/7 rh.

Answer 2

Answer:

Answer

Correct option is

D

πr(l+4r)

The total surface area of a cone is πR2+πLR, if R is the radius and L is the slant height.

Now, R=2r and L=2l

So, the answer will be π(2r)2+πrl =πr(l+4r)

Hence, the answer is πr(l+4r).