A Cone, a hemisphere and a cylinder stand on equal bases and have the same height .Find ratio of their volumes.
Choices:
A) 2:1:3
B) 2:1:4
C) 1:2:3
D) 4:1:7
E) 5:1:8
Let R be the radius of each   Height of the hemisphere = Its radius = R.   Height of each = R.   Ratio of volumes = (1/3)∏ R2 x R : (2/3)∏R3 : ∏ R2 x R = 1:2:3   ANSWER 1:2:3 1:2:3
<result>C</result>
A Cone, a hemisphere and a cylinder stand on equal bases and have the same height .Find ratio of their volumes.