Question 292403
the general equation is ___ (x - h)^2 + (y - k)^2 = r^2
this is a circle, centered at (h,k) with a radius of r


completing the squares for x and y ___ x^2 - 4x + 4 + y^2 + 2y + 1 - 436 = 0 + 4 + 1


(x - 2)^2 + (y + 1)^2 = 431


for the tyre ___ r^2 = {[sqrt(431)] + 11}^2
the center point does not change