Mathematics · Mensuration
A right circular cone of height h and radius R is cut by a plane parallel to the base at a distance h4 from the base. The ratio of the curved surface areas of the resulting smaller cone to the frustum is:
- 19 : 7✓
- 216 : 7
- 316 : 9
- 47 : 16
Correct answer
9 : 7
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