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In the $Δ ABC$ if $AB = \sqrt{2}, AC = \sqrt{20}$ , B = (3,2,0) and C = (0,1,4) then the length of the median passing through A is

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Correct option is C

BC=9+1+16=26 a=BC,b=CA,c=ABlength of median=2b2+2c2-a24

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In the Δ​ABC if AB=2, AC=20, B = (3,2,0) and C = (0,1,4) then the length of the median passing through A is

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In the $Δ ABC$ if $AB = \sqrt{2}, AC = \sqrt{20}$ , B = (3,2,0) and C = (0,1,4) then the length of the median passing through A is