The ratio of radii of two cylinders is 1:√3 and their heights are in the ratio 2 : 3. The ratio of their curved surface area is:
The correct option is B 2:3√3
Let the radii be r and √3r and heights be 2h and 3h respectively.
The curved surface area of a cylinder is given by 2π(radius)(height).
Ratio of their curved surface area
Therefore, the required ratio is 2:3√3.