1.

The ratio of a radius of a cylinder and a cone are in the ratio 1 ∶ 3, and the height of the cylinder is 1.5 times the slant height of the cone. What is the ratio of the curved surface areas of the cylinder and the cone?

A. 1 ∶ 2
B. 1 ∶ 1
C. 3 ∶ 4
D. 2 ∶ 1
Answer» C. 3 ∶ 4


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