Determine the centroid of a cross section with an isosceles right triangle of base 9 cm, a semicircle which diameter coincides with the triangle hypotenuse, a circular hole of radius 1 cm centered at x = 5 cm & y = 6 cm, and a rectangular hole (base 4 cm and height 1 cm) centered at x = 4 cm & y = 3 cm. Find the x and y coordinates of the centroid to 3 significant digits relative to the bottom left corner.

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