The total circumference is pi x diam = pi x 20(2) = 40 pi ft
38 degrees is 38/360 fraction of this total circumference 38/360 x 40 pi = 13.26 ft
The total circumference is pi x diam = pi x 20(2) = 40 pi ft
38 degrees is 38/360 fraction of this total circumference 38/360 x 40 pi = 13.26 ft