Give the equation of the circle with the given center and radius:
Center at (1, 2)
Radius is 1/2
I know that you are to use either (x-h)^2+(y-k)^2=r^2 or x^2+y^2=r^2, but I do not know how to do this? Can anyone help
In the equation
(x-h)^2+(y-k)^2=r^2
the centre is (h,k) and the radius is r
so just sub in your data.