Given the equation x^2 + (y-3)^2 = 25 a) What is the Center C?b) What is the length of the radius r? 

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llltkl | College Teacher | (Level 3) Valedictorian

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The standard form of the equation of a circle is: `(x-h)^2+(y-k)^2` , where the center C is (h,k) and the radius is r.

Here, the given equation is `x^2 + (y-3)^2 = 25` . We can rewrite this equation as:


Therefore, a) the center C is (0,3)

                 b) the length of the radius r is 5 units.