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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.


Solution

Radius = r

and height = h

Curved surface area = 2π rh

and total surface area = 2π r (h+r)

Ratio = 2π r (h+r) :  2π rh

= h + r : h


Mathematics
RD Sharma
Standard IX

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