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A Hollow cone is cut by a plane parallel...

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-segment into which the cone's altitude is divided by the plane.

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The correct Answer is:
`1:2`
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NAGEEN PRAKASHAN ENGLISH-VOLUME AND SURFACE AREA OF SOLIDS-Exercise
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