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19 June, 09:45

The center of a circle is at (0, 0), and the radius of the circle is 3 2. Which equation represents the circle?

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  1. 19 June, 11:06
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    x² + y² = 9

    Step-by-step explanation:

    The equation of a circle centred at the origin is

    x² + y² = r² ← r is the radius

    Here r = 3, hence

    x² + y² = 3² ⇒ x² + y² = 9
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