A cylinder and a cone have the same height and same radius of base. The ratio between the volumes of the cylinder and the cone is:  Pick one:
A) 4 : 1
B) 2 : 1
C) 7 : 1
D) 5 : 1
E) 3 : 1

Rationale: volume of the cylinder = π r ( power 2 ) h volume of the cone = 1 / 3 π r ( power 2 ) h ( π r ( power 2 ) h ) / ( 1 / 3 π r ( power 2 ) h ) = 3 / 1 = 3 : 1 answer is e .
Answer: E