## Momo 5 years ago could someone give me a formula to find an arc?

1. anonymous

2. momo

arc length

3. anonymous

usually that is radius times central angle theta

4. anonymous

$s = r \theta$

5. momo

how do i know what theta is?

6. anonymous

well, that depends on the problem. an arc is part of a circle, and each end of the arc is connected to the center of the circle by a radius. the angle between the two radii is theta Lots of ways to find theta, depending on what information you've been given