A square is inscribed in a circle. The circle has a diameter of 8radical3 cm. What is the length of one side of the square, in centimeters?

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step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.