Philip P. answered 03/14/19
Tutor
4.9
(482)
Affordable, Experienced, and Patient Geometry Tutor
The equation of a circle is:
(x-h)2 + (y-k)2 = r2
where (h,k) is the center of the circle and r is the circle's radius. In your case, (h,k) = (4,3) and r = 9. Just plug the values into the general equation to get the equation of this circle.