The diameter of a bicycle wheel is 8 inches. how many revolutions will this wheel make if the cyclist travels 1 km?

Basically, a bicycle wheel is a circle. And in order to determine how far the bicycle will cover in one wheel revolution, you need to find the circumference of this wheel.

Formula for calculating circumference:

C = 2nR = nD.

We define:

C = 3.14 * 8 = 25.12 dm. For convenience, let’s translate into meters.

25.12 dm = 2.512 m.

Let’s determine how many revolutions the wheel will make if the bike travels 1 kilometer:

1 km = 1000 m.

1000: 2.512 = 398.1 turns – the wheel will make.

Answer: for 1 kilometer the wheel will make 398.1 revolutions.