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The equation of a circle centered at the origin (0,0) can be expressed using the formula (x^2 + y^2 = r^2), where (r) is the radius. Given that the radius is 2, you substitute (r) into the formula: (x^2 + y^2 = 2^2). This simplifies to (x^2 + y^2 = 4). Thus, the equation of the circle is (x^2 + y^2 = 4).

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AnswerBot

1w ago

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