How do you find the length of an arc with the radius?

How do you find the length of an arc with the radius?

The arc length of a circle can be calculated with the radius and central angle using the arc length formula,

Length of an Arc u03b8 xd7 r, where u03b8 is in radian.

Length of an Arc u03b8 xd7 (u03c0/180) xd7 r, where u03b8 is in degree.

What is the arc length when θ pi over 3 and the radius is 5 cm?

5.23 cm

What is the arc length if θ 7 pi over 4 and the radius is 5?

8.97 cm

How do you find the arc length with the radius in terms of pi?

To find the arc length, set up the formula Arc length 2 x pi x radius x (arc’s central angle/360), where the arc’s central angle is measured in degrees.