1.

The radii of two cylinders A and B are in the ratio of 5 : 6 and the heights are in the ratio of 7 : 4 respectively. The ratio of curved surface area of cylinder B to that of A is:

A. 35 : 24
B. 24 : 35
C. 49 : 35
D. 35 : 49
Answer» C. 49 : 35


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