Answer:
3770 mm.
Step-by-step explanation:
The diameter of of the wheels is 60mm, that means the radius is 30mm.
Now for one revolution of the wheels, they cover the distance of [tex]2\pi *30mm=188.5mm.[/tex] on the ground.
For 20 revolutions, the distance covered will be 20 times this.
Thus
[tex]Distance\: covered =188.5*20=\boxed{3770mm}[/tex]
Which is our answer.
