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in Mathematics by (51.7k points)

A hollow cone is cut by a plane parallel to the base and upper portion is removed. If the curved surface of the remainder is 8/9 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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Since, curved, surface area of the remainder =8/9 of the curved surface area of the whole cone,

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