Find the circumference of the circle in terms of pi. A. 39 inB. 1521 in. C. 78 inD. 156 in

The circumference of the circle with radius [tex] r [/tex] is given by [tex] P=2\pi r [/tex]. When [tex] r=39\;in [/tex],[tex] P=2\pi (39)\\
P=78\pi \;in [/tex]Correct choice is (C).