Answer:
Therefore radius is 84 units.
Explanation:
Given:
arc length = 56 pie
Central angle = θ = 120°
pi = 3.14
To Find:
Radius = r =?
Solution:
If the θ measured in degree then the arc length is given as

Where r = radius, θ = Central angle
On substituting the values we get

Therefore radius is 84 units.