A hemisphere, cylinder and a cone are lying on a base of same radius. The height of the cone is twice the height of hemisphere, and height of cylinder is twice the height of cone. What is the ratio of the volumes of hemisphere, cylinder and cone?
1
1 : 2 : 6
2
3 : 4 : 2
3
1 : 6 : 1
4
4 : 2 : 3
5
5 : 6 : 3