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? 1 2 π b) 2 3 π c) 5 7 π d) 7 8 π

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116