Geometry

The diameter of a circle has endpoints P(- 10, - 8) ) and Q(4, 4) . a. Find the center of the circle. bFind the radius. If your answer is not an integer, express it in radical form. . Write an equation for the circle.

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  1. If you are given two points (a,b) and (c,d)
    the midpoint is ( (a+c)/2 , (b+d)/2 )
    and the distance between them is √( (a-c)^2 + (b-d)^2 )

    apply this to your data,
    then let me know what you got for the equation of the circle.

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    Reiny
  2. the center is the midpoint of PQ

    the radius is half the length of PQ

    with (h,k) as the center, and r as the radius
    ... the circle equation is ... (x - h)^2 + (y - k)^2 = r^2

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