Equation of a circle:
(x-h)^2+(y-h)^2=r^2
k is the x-coordinate for the centre, h is the y-coordinate for the centre
r=raduis
if the equation is x^2+y^2=r^2, the centre of the circle is at (0,0)
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I meant " = If a circle has its center infinitely into the right and has an infinite radius does the circle exist?" =
Radius
the radius is from the center of the circle to the edge so that's how you find the radius.
Yes it is. The radius of a circle is the length of the line from the center to any point on its edge.
This is called the radius.