A right cylinder and a right circular cone have the same radius and the same volume. The ratio of the height of the cylinder to that of the cone is:

A) 1 : 3

B) 3: 1

C) 2 : 3

D) 3: 2

Let the radius and  right height  circular cone and cylinder is r cm and h cm 

Then the volume of the right circular cylinder =πr2hcm3

And the volume of the right circular cone =31​πr2hcm3

Then the ratio of the right circular cylinder and right circular cone= 31​πr2hcm3/ πr2hcm3  ​=3:1

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