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Circumcentre of DeltaABC(h,k) ,where co-...

Circumcentre of `DeltaABC`(h,k) ,where co-ordinates of `A=(2+cos(pi/3),3+sin(pi/3))` ,`B=(2+cos pi,3+sin pi)` and `C=(2+cos(4 pi/3),3+sin(4 pi/3))`, then the value of `h^(2)+k^(2)=`

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