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A circle passes through the points (-1,3)and (5,11) and its radius is 5. Then its centre is?
Dear tadi parthi
Let the center is (h,k)
so (h+1)2 + (k-3)2 = (h-5)2 +(k-11)2 =52
so (h+1)2 + (k-3)2 = (h-5)2 +(k-11)2
simplify
3h +4k=34 ...............1
and (h+1)2 + (k-3)2 =52
h2 +k2 +2h -6k =15 ..............2
solve 1st and 2nd equation
that will desired solution
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