For a circle of radius 3 feet, find the arc length s subtended by a central angle of 57° ? a. s=19/40 pie feet. c. s=19/20 pie feet b. s=19/5 pie feet. d. s=19/10 pie feet

The answer is c.s=19/20 pie feet

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

Maybe the answer is 20mm. all i really did was just multiply, which is obvious.