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If the vertices of a triangle are \(A(4, -1)\), \(B(-10, -3)\) and \(C(4, 7)\), then find the length of the median through \(A\).
 
The coordinate of \(D\) \(=\) i,i
 
The length of the median \(AD\) \(=\)  units
 
[Note: Round off your length to one decimal place.]