Find the radius of the circle whose centre is (3, 2) and passes through ( √ 5, 6).
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Radius of the circle whose centre is (3,2) and passes through (−5,6) is the distance between (3,2) and (−5,6)
=(x2−x1)2+(y2−y1)2
=(−5−3)2+(6−2)2
=(−8)2+(4)2
=64+16
=80
=45 Units.
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