Equation of circle with center (4,3) radius 9

Answer 1

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.