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EXAMPLE 19 The radius of the base of a right circular cone is r. It is cut by a plane parallel to the base at a height h from the base. The distance of the boundary of the upper surface from the 3 centre of the base of the frustum is h? + - Show that the volume of the frustum is ar?h. 27

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Q1
The radius of the base of a right circular cone is r. It is cut by a plane parallel to the base at a height h from the base. The distance of the boundary of the upper surface from the centre of the base of the frustum is √h2+r29. Show that the volume of the frustum is 1327πr2h
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Q2

The radius of the base of a right circular cone is r. It is cut by a plane parallel to the base at a height h from the base.

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Q3
The radius of the base of a right circular cone is r. It is cut by a plane parallel to the base at a height h from the base. The slant height of the frustum is √h2+49r2 and the volume of the frustum is k27πr2h. Find k.
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Q4

The radius of the base of a right circular cone is r. It is cut by a plane parallel to the base at a height h from the base. What is the volume of the frustum obtained if it's slant height is √h2+49r2.


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Q5
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