Question

The radii of two cylinders are in the ratio 3:2 and their height are in the ratio 4:5. Calculate the ratio of their curved surface areas. ​

Answer 1

Answer:

Let the radii of the two cylinders be r1 and r2 and heights be h1 and h2 respectively.

r1:r2 = 3:2 -> r1=3/2 r2

h1:h2 = 4:5 -> h1 =4/5 h2

Ratio of CSA of two cylinders = 2πr1h1 : 2πr2h2

= r1h1: r2h2

= 3/2r2 4/5h2 : r2h2

=6:5

Step-by-step explanation:

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