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10 September, 15:23

Write an equation of the circle with center (-8,4) and diameter 6.

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  1. 10 September, 17:50
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    (x+8) ^2 + (y-4) ^2 = 3^2

    or

    (x+8) ^2 + (y-4) ^2 = 9

    Step-by-step explanation:

    The diameter is 6, so the radius would be d/2 = 3

    The equation of a circle is

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

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

    (x - - 8) ^2 + (y-4) ^2 = 3^2

    (x+8) ^2 + (y-4) ^2 = 3^2

    or

    (x+8) ^2 + (y-4) ^2 = 9
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