Question

A bicycle wheel with an 18 inch diameter rotates 120 degrees. What distance has the by I lie traveled

Answer 1

pi times 18 times 1/3
or around 18.8496

Answer 2

18.85 inch

Explanation:

One full revolution of the wheel gives a distance equal to the circumference of the wheel.

The circumference is given by, C = πd

where d is the diameter.

A full revolution is 360°.

120° = 120°/360° of a revolution = 1/3 of a revolution

Distance =
`(1)/(3)*\pi*18 = 6\pi = 18.85`