the radius of a circle is 18 yards what is the length of an arc that subtends an angle of Pi radians

ANSWER
s = 18π yards
EXPLANATION
The length of an arc with radius r and that subtends and angle θ is:
In this problem, the angle is π and the radius is 18 yards. The length of the arc is:
[tex]s=\pi\cdot18\text{yards}=18\pi\text{yards}[/tex]