Question

A bicycle wheel makes 500 revolutions in 1KM. Find the diameter of the wheel.

Answer 1

No.of revolutions=500
Distance covered=1km=1000m
Therefore, distance covered= no.of revolutions×Circumference of the wheel
1000=500×2πr
1000/500=2×22/7×r
2=44/7×r
r=2×7/44
r=7/22
Therefore, diameter of the wheel,d=2r
d=2×7/22
d=7/11m