SOLUTION: Billy likes to go cycling. His bike has wheels of diameter 85cm. He has invented a counter for his bike, which counts the number of revelations the wheel makes. One day the count

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Question 1028429: Billy likes to go cycling. His bike has wheels of diameter 85cm. He has invented a counter for his bike, which counts the number of revelations the wheel makes. One day the counter shows 310 revolutions. How far has billy cycled? give your answer to the nearest metre.


Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Each revolution corresponds to one circumference of the wheel.
C = 2(pi)r = (pi)d = .85(pi) m
310 such revolutions is a distance of
310(3.14)(.85) = 828 m to the nearest meter