Solve the problem.To approximate the speed of a river, a circular paddle wheel with radius 0.5 feet is lowered into the water. If the current causes the wheel to rotate at a speed of 11 revolutions per minute, what is the speed of the current? If necessary, round to two decimal places.
A. 34.56 mph
B. 0.06 mph
C. 0.2 mph
D. 0.39 mph
Answer: D
Mathematics
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A. 0
B. 
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