SOLUTION: What is the ordered pair representing the center of the shape represented by: x2 + y2 = 9? What is the area of the shape is represented by the equation: x2 + y2 = 9?

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Question 207924: What is the ordered pair representing the center of the shape represented by:
x2 + y2 = 9?
What is the area of the shape is represented by the equation: x2 + y2 = 9?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
(0,0)
graph+%28600%2C600%2C-5%2C5%2C-5%2C5%2Csqrt%289-x%5E2%29%2C-sqrt%289-x%5E2%29%29
the formula of a circle is:
%28x-h%29%5E2+%2B+%28y-k%29%5E2+=+r%5E2
this formula has h = 0 and k = 0
this is a circle with the center at the origin.
the radius of the circle = 3
(h,k) is the center of the circle.
r^2 is the radius squared of the circle.