Trigonometry homework help: Bicycle chain drive problem? Ten points to any answer...

aLia ツ

New member
...that can explain it!? Okay so I'm doing my homework and I'm stuck.

How far will a bicycle move if the pedals are rotated through 180° if the back drive has a radius of 1.38in and the front drive has a radius of 4.72 inches. The wheel has a radius of 13.6 inches.

I know the answer is 146 inches but I have no clue how to get it. Any help? Thanks.

Ten points to the answer that explains it the best! =]
 
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