The general equation of a circle is
[tex](x-h)^2+(y-k)^2=r^2[/tex]
Here, (h,k) is the center of the circle and r is the radius of the circle.
change the given equation into the general form as follows:
[tex](x-0)^2+(y-0)^2=5^2[/tex]
So, the center is (0,0) and the radius is r = 5.
