SOLUTION: Given the circle: (y+7)^2+(x-4)^2=18 Find the center: Find the exact radius: Can someone show me what formulas to use, and how to use them? Thank You!!

Question 60213: Given the circle: (y+7)^2+(x-4)^2=18
Find the center:
Find the exact radius:
Can someone show me what formulas to use, and how to use them?
Thank You!!

Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
Given the circle: (y+7)^2+(x-4)^2=18
Find the center: (4,-7)
Find the exact radius:
:
The standard form of the equation of a line is , Where the center is (h,k) and the radius is r.
Your equation is a little out of order and I initially put down the wrong answer for the center because I didn't notice.
(x-4)^2+(y+7)^2=18
The center is:
(h,k)=(4,-7)
The radius is:

Happy Calculating!!!

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