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A circle is centered at the point (-7, -1) and passes through the point (8, 7).
The radius of the circle is____ units. The point (-15,___ ) lies on this circle..

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Answer:

Step-by-step explanation:

radius =( (8+7)^2 + (7+1)^2 )^1/2 = 17 unit

Equation of the circle = (x + 7)^2 + (y+1)^2 = 17^2

                                   = (-15+7)^2 + (y+1)^2  = 17^2

                                  =14

(-15, 14) lies on this circle

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