Question

a circle has a circumference of 20. It has an arc length of 4, what is the central angle of the arc in degrees?

Answer 1

It’s correct

Explanation:

Thanks

Answer 2

Angle = 72°

Explanation:

To find the length of an arc,

Angle/360 * circumference

Length = 4

Angle = ?

circumference = 20

Angle/360 * 20 = 4

Rearrange to find the Angle.

Angle/360 = 4 / 20 = 0.2

Angle = 360 * 0.2

Angle = 72°