Deepak Bora
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The height of a right circular cone is 20 cm. A small cone is cut off at the top by a plane parallel to the base. If its volume be 18 of the volume of the given cone, then at what height above the base is the section made?

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This is the HOTS question from RS Aggarwal book, problem number 18, page number 824, exercise 17C, chapter volume and surface area of solid.

Chapter Mensuration

This problem was asked in 2014 cbse board exam.

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