The radii of two cylinders are in the ratio 5 : 7 and their heights are in the ratio 3 : 5.

#mcqmathsclass10
The radii of two cylinders are in the ratio 5 : 7 and their heights are in the ratio 3 : 5. The ratio of
their curved surface area is
(a) 3 : 7 (b) 7 : 3 (c) 5 : 7 (d) 3 : 5