Whats the equation of a circle centered at (7,1) that passes through (-2,10)

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02-06-2014
Mathematics

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Whats the equation of a circle centered at (7,1) that passes through (-2,10)

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AL2006 AL2006 · Answer 1 · 2014-06-02T18:16:36+02:00

AL2006 AL2006

02-06-2014

The line from (7, 1) to (-2 10) is a radius of the circle.

Its length is the square root of [ (-2 - 7)² + (10 - 1)² ] = √(81 + 81) = √162

The equation of the circle is: (x- 7)² + (y - 1)² = 162

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