Question
The radii of two cylinders are in the ratio 3 : 5 and their height are in he ratjo of 2 : 3. Find the ratio of their curved surface areas :
Answer: Option B
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Le the radii of the cylinders be 3x, 5x and their height be 2y, 3 y respectively . Then
Ratio of their curved surface areas = `(2pi xx 3x xx 2y)/(2pi xx 5x xx 3y) = 2/5 = 2 : 5`
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