# Find the Center and Radius x to the power of two plus y to the power of two equals four

This is the form of a circle. Use this form to calculate the circle's center and radius.

Compare the values in this circle to the values in the usual form. The variable represents the radius of the circle, represents the x-offset from the origin, and represents the y-offset from origin.

The center of the circle is found at .

Center:

These values represent the important values for graphing and analyzing a circle.

Center:

Radius:

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