## anonymous one year ago determine the centroid of the surface of a right circular cone of altitude h

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1. anonymous

The answer from the book is 2h/3 from the apex, but i dont know how it was solved

2. anonymous

3. IrishBoy123

are you using calculus? if so take a strip thickness dx and roll it out and you get a trapezoid as shown in blue |dw:1442306718382:dw| then calculate dM and dM_o for mass and moment and $$\large \bar x = \frac{\int\limits_{0}^{h} dM_o}{\int\limits_{0}^{h} dM}$$ if you're not doing calculus, sorry :(

4. anonymous

can you indicate that equations will i put in the integral. I'm kinda confused. sorry