Question

How many revolutions will the wheel of a bicycle make to cover 4.4 km . if its diameter is 70 cm

Answer 1

Radius of the wheel = 70÷2 = 35cm
Circumference = 2πr = 2x22÷7x35
=220cm = 2.2m = 0.0022km
No.of revolutions the wheel would make = 4.4÷0.0022 = 2000