Find the length of the arc shown in red. Leave your answer in terms of pi.

120°
60ft
The length of the arc is
  
enter your response here ft.
​(Simplify your answer. Type an exact answer in terms of pi​.)

The formula to calculate the length of an arc given an angle in radians and the radius is:

Length of arc = angle in radians x radius

We first need to convert 120° to radians:

120° = 120° x π/180° = 2π/3 radians

Now, we can calculate the length of the arc:

Length of arc = (2π/3) x 60ft = 40π ft

Therefore, the length of the arc shown in red is 40π ft.