A right circular cone is sliced into a smaller cone and a fr

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69

M: +1.00/-0.33

A right circular cone is sliced into a smaller cone and a frustum of a cone by a plane perpendicular to its axis. The volume of the smaller cone and the frustum of the cone are in the ratio 64 : 61. Then their curved surface areas are in the ratio

[CDS-I 2018 Elementary Maths(PYSP)]

A 4 :1

B 16 : 9

C 64 : 61

D 81: 64