Mathematics · Mensuration
A solid metallic sphere is melted and the entire material is recast into a solid cylinder having the same radius as the original sphere. What is the ratio of the curved surface area of the cylinder to the surface area of the sphere?
- 14 : 3
- 23 : 2
- 32 : 3✓
- 41 : 2
Correct answer
2 : 3
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