Geometry circle equation

Here are the circle equations: Circle centered at the origin, (0, 0), x2 + y2 = r2 where r is the circle's radius. Circle centered at any point (h, k), ( x – h) 2 + ( y – k) 2 = r2 where


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Circle equation review

The area of a circle is the total area that is bounded by the circumference. Think of the area of the circle as if you draw the circumference and fill in the area within the circle with paint or crayons. The formulas for the

Equations of Circles

To rewrite an expanded circle equation in standard form: If necessary, divide both sides of the equation by the same number so that the coefficients of both the -term and the -term are . Find the constant the completes the square for . Repeat step 2 for . Add the constants from

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