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December 20, 2014

December 20, 2014

Posted by **sn** on Wednesday, October 5, 2011 at 11:13am.

- math -
**Steve**, Wednesday, October 5, 2011 at 11:53amIf a circle of radius r has center at (h,k) the equation of the circle is

(x-h)² + (y-k)² = r²

So, plug and chug:

x² + (y-(120+9))² = 120²

x² + (y-129)² = 14400

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