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A right circular cylinder just encloses a sphere of radius \(r\) (see fig.).
Find:
(i) surface area of the sphere \(=\)
(ii) curved surface area of the cylinder \(=\)
(iii) ratio of the areas obtained in (i) and (ii) \(=\)
Answer variants:
\(4 \pi r^2\) sq.units
\(1:4\)
\(3 \pi r^2\) sq.unirs
\(2:1\)
\(4:1\)
\(1:1\)
\(2 \pi r^2\) sq.units
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