Moment Of Inertia OF a "CONE" DETAILED SOLUTION

yaar u can do this by considering an elemental ring if hollow and disc if solid cone then Integrate that value.....

I dont understand why users dont search the forum atleast once before posting new questions..

this has already been done here
http://targetiit.com/iit-jee-forum/posts/moment-of-inertia-1623.html

THANKS TO ALL