Find the center and the radius of the circle: (x - 1)^2 + (y + 3)^2 = 4.

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(x-h)^2 + (y-k)^2 = r^2

(h,k) represent the center of the circle and r is the radius of the circle.

Comparing the given equation and the standard form, we'll get:

h = 1 , k = -3 and r = sqrt4 = 2**The center of the circle has the coordinates C(1 , -3) and the radius r = 2.**

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