arc length = 6.63311 ft.
step-by-step explanation:
the formula the arc measure is:
arc length s=2πr(c)/360
where:
c is the central angle of the arc in degrees
r is the radius of the arc
π is pi, approximately 3.142
using the above formula we get
s =
thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is
6.63311 feet