Mathematics · Geometry and Mensuration
A right circular cone of height h, slant height L, and radius R is cut by a plane parallel to the base at a distance h5 from the vertex (measured from the top). The ratio of the curved surface area of the frustum to the total surface area of the smaller resulting cone is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 124L : (R + L)✓
- 216L : 9(R + L)
- 39(R + L) : 16L
- 416(R + L) : 9L
Correct answer
24L : (R + L)
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