A sphere, cylinder, and cone have the same radii and the same heights. Find the ratio of their curved surface area.
1
4 ∶ 4 ∶ √5
2
4 ∶ √5 ∶ 4
3
2 ∶ 2 ∶ √5
4
4 ∶ 4 ∶ 5
A sphere, cylinder, and cone have the same radii and the same heights. Find the ratio of their curved surface area.