Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Show that the volume of the greatest cylinder which can be inscribed in a cone of height ' h ' and semi − vertical angle α is
π h 3 tan 2 α .
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Let H,R,V be
height, radius (base),
volume respectively of cylinder.

tan α =
(0 < H < h)
V = π R 2 H
= π tan 2 α (h – H) 2 H
= π tan 2 α (h – H) (h – 3H)
V is maximum when H =
.
Maximum V = π tan 2 α 
=
h 3 tan 2 α .
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