What is the equation of a circle whose center is at the origin and whose radius is 9?

The equation of a circle whose center is at the origin and whose radius is 9 is x^2 + y^2 = 81.

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Asked 4/29/2013 11:56:47 AM

Updated 7/5/2014 10:29:36 AM

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The equation of a circle whose center is at the origin and whose radius is 9 is x^2 + y^2 = 81.

Added 7/5/2014 10:29:36 AM

This answer has been confirmed as correct and helpful.

Confirmed by yumdrea [7/5/2014 10:39:45 AM]

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