Question

For a circle of radius 2 feet, find the arc length s subtended by a central angle of 54 degrees.

Answer 1

r = 2 ft; α = 54°
s = ( r π α ) / 180°
s = ( 2 π 54° ) / 180°
s = 108° π / 180°
s = 0.6 π ft
or: s = 0.6 · 3.14 = 1.884 ft