B) So lies in the circumference of the circle. P (1, 3) is the centre of a circle and a



b) So lies in the circumference of the circle. P (1, 3) is the centre of a circle and a point Q (7, 11) is any point in its circumference. Find the diameter of the circle. Does another point (-5, 10) lie in the circumference of the circle? ​




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