You have measured around the outside of a tank and found the circumference to be 22' 6 1/2". What will be the distance to the centerline (radius of conduit), in inches, of a 2 1/2" rigid metal conduit mounted with its inside edge 6" away from the outside of the tank?
a. 78 13/16
b. 79
c. 79 5/16
d. 79 11/16
