SOLUTION: A circular bicycle track is built with a radius 45m. what will be the total length, in meters of the rail built at the outer edge of the track? (Answer in terms of pi)

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A circular bicycle track is built with a radius 45m. what will be the total length, in meters of the rail built at the outer edge of the track? (Answer in terms of pi)      Log On


   

Question 1026454: A circular bicycle track is built with a radius 45m. what will be the total length, in meters of the rail built at the outer edge of the track? (Answer in terms of pi)
Answer by ikleyn(52814) About Me  (Show Source):
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A circular bicycle track is built with a radius 45m. What will be the total length, in meters of the rail
built at the outer edge of the track? (Answer in terms of pi)
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It is 2%2Api%2Ar = 2%2Api%2A45 = 90%2Api

measured along the internal circular board of the rail.