Question

A bicyclist races on a bicycle with 12-inch-radius wheels. When she is traveling at a speed of 49 ft/sec, how many

revolutions per minute are her wheels making?
Her wheels are making rpm.
(Round to the nearest thousandth as needed.)

Answer 1

about 467.916 rpm

Explanation:

12 inches = 1 foot

C = 2π × 1 = 2π feet

(49 feet/second)(60 seconds) = 2940 feet/minute

2940 / 2π = 467.916 rpm