Question

The radius of two cylinder are in the ratio 3:4 and their heights are in the ratio 5:3. Find the ratio of their curved surface area.?​​

Answer 1

Answer:

5:4

Step-by-step explanation:

let the radius of cylinders are 3x and 4x

let the heights of cylinders are 5y and 3y

ratio of csa of cylinders are 2π×3x×5y/2π×4x×3y

=>5:4

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