A bicycle wheel makes 500 revolutions in moving 1 km
In 1 revolution, the bicycle wheel covers
=1500km=1000500m=2m [∵ 1 km = 1000m]
1 revolution distance = Circumference of the wheel
⇒2πr=2⇒2×227×r=2
⇒r=2×72×22=722 [∵ circumference of a circle =2πr]
∴ Diameter (d) =2r=722×2=711=0.636 m