Two cylinders have the radii of their bases in the ratio 4 : 5 and their heights are in the ratio 5 : 7. Find the ratio of their curved surface areas.

Question

Two cylinders have the radii of their bases in the ratio 4 : 5 and their heights are in the ratio 5 : 7. Find the ratio of their curved surface areas.

Options

A.

5 : 4

B.

4 : 5

C.

1 : 2

D.

4 : 7

cylindercurved surface arearatiogeometry

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