A metal wire is bent to the shape of a circular arc. The wire is shown in blue in the figure. 8 7 6 S 4 3 2 1 目。 -1 -2 -3 4 -5 6 -7 -8 678 x (cm) The arc is centered around the origin. What is the x coordinate of the arc's center of the mass? Please, notice that the circular arc goes through grid intersection points.
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