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Which of the the following statements is not correct?
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- For a given radius and height, a right circular cone has the lesser volume among a right circular cone and a right circular cylinder.
- If side of a cube is increased by 10%, the volume will increase by 33.1%.
- If the radius of a sphere is increased by 20%, the surface area will increase by 40%.
- Cutting a sphere into 2 parts does not change the total volume.
Correct Option: C
| Percentage increase in surface area of sphere = |  | 20 + 20 + |  | % = 44% | |
| 100 |
