Q9. A cone is cut by a plane parallel to the base ans upper part is removed. If the C.S.A. of the remainder is 15/16 of the C.S.A. of whole cone, find the ratio of the line segments to which the cone's height is divided by the plane.
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hollow cone is cut by a plane parallel to the base and the upper portion is removed. If the curved surface of the remainder is 98 of the curved surface of the whole cone, find the ratio of the line segments into which the cone's altitude is divided by the plane.
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