It is a question of mathematics

Question

A hollow cone is cut by a plane to it's Base and the upper portion is removed. if the c.s.a of the remainder is 8/9 of the c.s.a of the whole cone. find the ratio of the line segments in to which the altitude of the cone is divided by the plane

Answer 1

This question is likely from CBSE Math Book (class X), with reference to Que No. 25 from Exercise - 27. I have posting the following solution.

Comments

Thanks Adarsh Kumar, glad you like solution. :-)