Answer:
16pi units
Step-by-step explanation:
Please use " ^ " to indicate exponentiation: (x − 9)^2 + (y − 3)^2 = 8^2.
Here we see immediately that the square of the radius is 64, so that the radius itself is 8.
The formula for the circumference of a circle is C = 2*pi*r. With r = 8, the circumference here is C = 2*pi*8 = 16 pi units.
