Role of a, b and r in the equation (x-a)^2+(y-b)^2=r^2
Summary
With the help of this activity, we have learnt that:
a and b are the coordinates of the center in the equation of circle which is, (x-a)^2+(y-b)^2=r^2
r is the radius of the circle in the equation of circle, (x-a)^2+(y-b)^2=r^2