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Question -

Write the ratio of total surface area to the curved surface area of a cylinder of radius r and height h.



Answer -

∵ Radius = r
and height = h
∴ Curved surface area = 2πrh
and total surface area = 2πr(h + r)
∴ Ratio = 2πr(h + r) : 2πrh
= h + r : h

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