Question 888507
Compare this to the general equation of a circle of radius R centered at (h,k),
{{{(x-h)^2+(y-k)^2=R^2}}}
.
.
{{{(x-0)^2+(y-4)^2=4^2}}}
Circle centered at (0,4) with radius 4.
{{{drawing(300,300,-6,6,-2,10,grid(1),circle(0,4,4))}}}