how to find centroid of this composite plane shape
http://math.stackexchange.com/questions/988745/find-the-centroid-of-shown-plane-figure

Question

how to find centroid of this composite plane shape
http://math.stackexchange.com/questions/988745/find-the-centroid-of-shown-plane-figure

anonymous · Answer

i am stuck at finding y coordinate

anonymous · Answer

its like finding the avg

anonymous · Answer

think of it like breaking it up into small square areas and u wanna find at the x value where you are getting the mean

anonymous · Answer

yeah but how do i plugin everything into the formula
$$\large \overline{y} = \dfrac{1}{A}\int\limits_a^b (f^2-g^2) dx$$ ?

anonymous · Answer

I got 
A = 24 - 1.8^2pi/2

anonymous · Answer

break the circle into +/- sqrt(r^2-...)

anonymous · Answer

lemmee see something quick

anonymous · Answer

okay thanks there is a mistake in earlier formula, it should be 

$$\large \overline{y} = \dfrac{1}{A}\int\limits_a^b \frac{1}{2}(f^2-g^2) dx$$

anonymous · Answer

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