Question

the radii of two cylinder are in the ratio 2:3and their height are in the ratio 5:3.calculate the ratio of their curved surface areas.

Answer 1

According to question

R1:R2 = 2:3
R1/R2 = 2/3 ----------(1)

H1:H2 = 5:3
H1/H2 = 5/3 ------------(2)


Now,
CSA1 : CSA2 = (2* pi *R1*H1) / (2* pi *R2*H2)
CSA1 : CSA2 = R1*H1 / R2 * H2
CSA1 : CSA2 = (2/3) * (5/3)
CSA1 : CSA2 = 10/9
CSA1 : CSA2 = 10:9



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Answer 2

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