the arc length of AB is 2^pi ft. find the radius of the circle ABC=43 degree. round your answer to the nearest hundredth.
Surely you mean 2*pi, no?
since s = rθ where θ is in radians,
2pi = r * 43 * pi/180
r = 360/43 = 8.37
since s = rθ where θ is in radians,
2pi = r * 43 * pi/180
r = 360/43 = 8.37