What is the arc length if the radius is 12 cm?*

A

B

60°

O 12 pi cm

O 3 pi cm

O 4 pi cm

024 pi cm

4π cm

Step-by-step explanation:

The length of an arc of a circle with radius r and central angle θ is given by ...

s = rθ

where θ is in radians.

Here, your arc measures 60° = π/3 radians, so the arc length is ...

s = (12 cm) (π/3) = 4π cm