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Thread: circles

  1. #1
    Junior Member
    Jul 2008


    Write an equation for the circle with the given properties.

    32. Center at (4, -3), radius 2\sqrt{6}

    i don't understand it.
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  2. #2
    Junior Member Serena's Girl's Avatar
    Jul 2008
    The equation of a circle is

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

    where the center is (h, k) and r is the radius. Just substitute directly into the equation
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