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billy likes to go cycling his bike has wheels of diameter 80cm one day the counter shows 160 revolutions

billy likes to go cycling 
his bike has wheels of diameter 80cm
one day the counter shows 160 revolutions

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Andy C. | Math/Physics TutorMath/Physics Tutor
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1 revolution = pi * diameter = 22/7 * 80 = 251 and 3/7 cm = 251.428571428571428571....
 
160 revolutions = 40228.571428571428..... cm = 402.285714... meters = 0.402285714.... km
 
Hopefully that answers your question