Question 1168636
The radius of the front wheel is sqrt(9) = 3 units. The center of the front wheel is at the point (6,5), so the wheel touches the ground at (6,2).  Thus the rear wheel touches the ground 10 units apart at the point (-4,2).  Since the radius of the rear wheel is 3*2 = 6 units, the coordinates of the center point are (-4,8). Hence the equation is (x+4)^2+(y-8)^2 = 36