a unicycle made 1000 revolutions as it travelled down a road. What distance did the rider travel?

Question

unicycle wheel had..

a radius of 30cm

a diameter of 60cm

and a circumference of 188.49cm

 

 

Answer 1

A revolution is the full rotation of the wheel, which is the length of the circumference making contact with the ground once. If you place a sticky string on a wheel that attaches itself to the ground as the wheel turns, the length of the circumference will be left on the ground once the wheel makes one revolution. This is the distance the wheel traveled during one revolution.

 

1 revolution = 1 circumference

2 revolutions = 2 * circumference

1000 revolutions = 1000 * circumference = 1000 * 188.49cm = 188490 cm.