Problem 3 Answer

The answer is 8r, where r equals the radius of the wheel.

The distance as the dot moves from the 3:00 to 9:00 postion counterclockwise is 4*2^1/2. As it moves from the 9:00 position to the 3:00 position the distance is 8- 4*2^1/2, assuming the r=1.

Michael Shackleford, A.S.A.

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