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A solid right circular cylinder and a solid hemisphere stand on equal bases and have the same height. The ratio of their whole surface area is:
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- 3 : 2
- 3 : 4
- 4 : 3
- 2 : 3
- 3 : 2
Correct Option: C
Radius of cylinder = r units and height = r units
[∵ height of hemisphere = radius]
∴ Required ratio = 2πr² + 2πr² : 2πr² + πr²
= 4 : 3
