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Math Help - A hard question that came in my midterms

  1. #1
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    Unhappy A hard question that came in my midterms

    Find the Center and Radius:
    A circle w/ (-5,4) & (-6,-3) as ends of a diameter
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  2. #2
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    Quote Originally Posted by ^_^Engineer_Adam^_^ View Post
    Find the Center and Radius:
    A circle w/ (-5,4) & (-6,-3) as ends of a diameter
    If the ends of the diameter are (-5,4) and (-6,-3), then the center of the circle is the midpoint of the said diameter, which is
    ((-5+(-6))/2,(4+(-3))/2) = (-5.5,0.5) -------------answer.

    The radius then is
    r = sqrt[(-5.5 -(-5))^2 +(0.5 -4)^2)
    r = sqrt[(-0.5)^2 +(-3.5)^2]
    r = sqrt[0.25 +12.25]
    r = sqrt(12.5) = 3.535534 ---------------answer.
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