# Math Help - Integral Help

1. ## Integral Help

Find the centroid of the plane region bounded by y = sqrt(4 - x^2) and y = 0 for x between -2 and 2.

Basically, I begin by trying to find the area, which I do through the picture at the bottom:

However, I get an area of 0, which I know is incorrect.

2. You can use the substitution x=2sint or x=2cost