A sphere of radius “r” is fitted in a cylinder of height “h” such that the top of the sphere reaches only half the height of cylinder as shown in the figure. What is the ratio of curved surface area of a cylinder to surface area of a sphere?

Surface area of the sphere = 4 π r² , where “r” is the sphere's radius.

There are three types of surface area in solids: lateral surface area (LSA), curved surface area (CSA), and total surface area (TSA).