Both circle a and circle b have a central angle measuring 135°. the ratio of the radius of circle a to the radius of circle b is 4 7 . if the length of the intercepted arc for circle a is 1 2 π, what is the length of the intercepted arc for circle b? a) 1 2 π b) 2 3 π c) 5 7 π d) 7 8 π