A cylinder,a cone, and a sphere are of the same diameter and same height. Find the ratio of their curved surfaces
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curved surface area of cylinder , cone and sphere are 2 x pi x r^2 , pi x r x l (same height and diameter ) so its pi x r^2 and 4 x pi x r^2
ratio= 2 x pi x r^2 : pi x r^2 : 4 x pi x r^2
= 2:1:4 ( after cancellation of pi and r^2)
ratio= 2 x pi x r^2 : pi x r^2 : 4 x pi x r^2
= 2:1:4 ( after cancellation of pi and r^2)
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