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Standard form of circle is $\"\"$ , where $\"\"$ is center and $\"\"$ is radius.

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Diameter endpoints are $\"\"$ and $\"\"$ .

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Find the center of the circle.

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Mid point of the endpoints is center of the circle.

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Mid point formula: $\"\"$ .

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Mid point of $\"\"$ and $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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Find the radius of the circle.

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Distance between center and either of end point is radius of the circle.

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Distance formula: $\"\"$ .

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Distance between $\"\"$ and $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$ .

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The circle equation in standard form is $\"\"$ .

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The circle equation in standard form is $\"\"$ .