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A cone, a cylinder and a hemisphere stand on equal bases and have equal heights. The ratio of their volumes is
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- 2 : 3 : 1
- 2 : 1 : 3
- 1 : 3 : 2
- 1 : 2 : 3
- 2 : 3 : 1
Correct Option: C
Ratio of volumes = cone : cylinder : hemi-sphere
| = | πr²h : πr²h : | πr³ | ||
| 3 | 3 |
| = | πr³ : πr³ : | πr³ | ||
| 3 | 3 |
[∵ r = h]
| = | : 1 : | = 1 : 3 : 2 | ||
| 3 | 3 |
