<span>(x - a)^2 + (y - b)^2 = c^2 </span>above equation is the general equation for the circle. In that, a and b are center of the circle and c is the radius of the circle.
let's change the equation to general circle equation (x - 3)^2 + (y - 5)^2 = 25 <span>(x - 3)^2 + (y - 5)^2 = 5^2 </span> center (3 , 5) x = 3 y = 5