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27 May, 23:15

Which is an equation of a circle with center (-10, 6) and radius 8?

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  1. 27 May, 23:19
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    An equation of a circle:

    (x - a) ² + (y - b) ² = r²

    (a; b) - a coordinates of a center

    r - a radius

    r = 8; (-10; 6) ⇒ a = - 10 and b = 6

    subtitute

    (x - (-10)) ² + (y - 6) ² = 8²

    Answer: (x + 10) ² + (y - 6) ² = 64
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