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OpenStudy (anonymous):
A circle has its center at (-2, 5) and a radius of 4 units. What is the equation of the circle? How would I begin to solve this?
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OpenStudy (callisto):
Use the centre-radius form. \((x-h)^2 + (y-k)^2 = r^2\), where (h,k) are the coordinates of the centre of the circle, r is the radius of the circle.
OpenStudy (anonymous):
thank you :]
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