Short trick to derive Xc.m.,Yc.m. logically1)ring, 2) hollow Hemispher – InterviewSolution

1.	Short trick to derive Xc.m.,Yc.m. logically1)ring, 2) hollow Hemisphere, 3)solid hemisphere, 4) hollow cone,5)and solid cone.
Answer» Short trick to derive Xc.m.,Yc.m. logically 1)ring, 2) hollow Hemisphere, 3)solid hemisphere, 4) hollow cone, 5)and solid cone.

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