Mathematics · Mensuration
A solid metallic sphere of radius 12 cm is melted and recast into 27 identical smaller spheres. What is the ratio of the surface area of the original sphere to the total surface area of 6 smaller spheres so formed?
- 13 ∶ 1
- 23 ∶ 2
- 39 ∶ 8✓
- 49 ∶ 4
Correct answer
9 ∶ 8
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