Math Question

If a car goes around a turn too quickly, it can leave tracks that form an arc of a circle. By finding the radius of the circle, accident investigators can estimate the speed of the car. To find the radius, accident investigators choose points \( A \) and \( B \) on the tire marks. Then, the investigators find the midpoint \( C \) of \( A B \). Use the diagram to find the radius \( r \) of the circle. Round your answer to the nearest tenth.



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