Answer :
C (circumference) = 2rPi
22= 2rPi
22/Pi = 2rPi /Pi
22/Pi = 2r
(22/Pi)/2 = 2r/2
(22/Pi)/2= r
sorry, don't have a calculator on me
22= 2rPi
22/Pi = 2rPi /Pi
22/Pi = 2r
(22/Pi)/2 = 2r/2
(22/Pi)/2= r
sorry, don't have a calculator on me