<PRE><B>Question 448727</B>
Here is the equation of a circle: (x-1)^2 + (y+6)^2=15. How do you find the circumference of the circle? How do you write the circumference in terms of pi? 
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All you need is the radius of the circle.
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radius = sqrt(15)
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Circumference = 2(pi)r = 2*sqrt(15)(pi) ~  24.335 units
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Cheers,
Stan H.
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