SOLUTION: what is the formula in finding the center of the circle?

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Question 256776: what is the formula in finding the center of the circle?
Found 2 solutions by drk, Alan3354:
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
The formula for any circle is:
%28x-h%29%5E2%2Fa%5E2+%2B+%28y-k%29%5E2%2Fb%5E2+=+1
The center is located at (h,k)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If the center is at (h,k), it's
%28x-h%29%5E2+%2B+%28y-k%29%5E2+=+r%5E2 r is the radius