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A hollow cone is cut by a plane parallel to the base and the upper portion is removed. If the curved surface ofΒ the remainder is Β of the curved surface of wholecone, find the ratio of the line-segment into which the cone's altitude is divided by the plane






are length,height,radius if a short cone

C.S.A of the smaller cone C.S.A of given cone
C.S.A. of the remaining portion C.S.A. of given cone


Hence, .

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