Question

the radii of two right circular cylinders are in the ratio 2:3 and their heights are in the ratio 5:4 then find the ratio of their curved surface areas
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Answer 1

Answer:

Step-by-step explanation:

Let the ratio of radii(r1):(r2) = 2:3

Similarly, h1:h2 = 5:4

Curved surface area of cylinder is 2πrh

So, if we take ratios of C.S.A of both the cylinders

We should write like this

2πr1h1 : 2πr2h2

We can eliminate 2π from both the terms because it is a constant.

So,

2×5 : 3×4

5:6 is your answer