Answer:
Below
Explanation:
Since the center (h,k) is (4,1) and the circle passes through (4,-4) the radius is 5 ( from y = 1 to -4 ...a distance of 5 )
the equation for a circle is of the form (x-h)^2 + (y-k)^2 = r^2
becomes (x-4)^2 + ( y-1)^2 = 5^2 < ==== graph this equation
radius = 5 then the diameter = 10 then circumference = pi * d = 10 pi