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The radius of the base of a right circul...

The radius of the base of a right circular cone is `rdot` 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 `sqrt(h^2+(4^2)/9)` . Show that the volume of the frustum is `(13)/(27)pir^2hdot`

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NAGEEN PRAKASHAN ENGLISH-VOLUME AND SURFACE AREA OF SOLIDS-Exercise
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