Question

How many revolutions would a wheel of radius 2m make to travel 30km

Answer 1

2387 to nearest revolution.

Explanation:

The circumference of the wheel = 2πr

= 2π*2

= 4π m

30 km = 30,000 m.

If R is the number of revolutions:

R = 30000/4π

= 2387.3.