Find the length of a line segment whose endpoints are (-2,3) and (6,3). 2. (-5,-3) and (2,-4). 3. The point (7,2) lies on a circle. What is the length of the radius of the circle if the center is located at (2,1)? 4. The endpoints of the diameter, , of circle O, are A(-8,-4) and B(3,6).
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We will discuss here how to solve the problems on distance formula. The distance between two points A (x1, y1) and B (x2, y2) is given by the formula AB = sqrt [ (x2 - x1)^2 + (y2 - y1)^2]