SOLUTION: What is the radius of the circle whose equation is x2 + y2 = 9?
3 , 9 OR 81?
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Question 316422: What is the radius of the circle whose equation is x2 + y2 = 9?
3 , 9 OR 81?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The equation of a circle with center )
and radius 
is:
^2\ +\ (y\ -\ k)^2\ =\ r^2)
John
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