Answer:
1/3 pi
Step-by-step explanation:
First we find the circumference of the circle
C = 2*pi*r
C = 2*pi*3
C = 6pi
Then we find the fraction of the circle the arc is
A circle is 360 degrees. The arc is 20 degrees.
20/360 = 1/18
Multiply the circumference by the fraction
1/18 * 6pi = 1/3 pi
