SOLUTION: The equation (x−1)2+(y−3)2=r2 represents circle A. The point B(4, 7) lies on the circle. What is r, the length of the radius of circle A?
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Question 1031324: The equation (x−1)2+(y−3)2=r2 represents circle A. The point B(4, 7) lies on the circle. What is r, the length of the radius of circle A?
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!
, simply using the variable r solved in terms of x and y and then just substituting the coordinates of the given point B.
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