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25 January, 22:47

What is the standard form of the equation of a circle whose diameter is 12 units and whose center is (-2,9) ?

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  1. 25 January, 23:11
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    (x + 2) ² + (y - 9) ² = 36

    Step-by-step explanation:

    Equation of a circle is:

    (x - h) ² + (y - k) ² = r²

    where (h, k) is the center and r is the radius.

    Here, the center is (-2, 9) and the radius is 12/2 = 6.

    (x + 2) ² + (y - 9) ² = 36
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