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Questions  >>  CBSE XII  >>  Math  >>  Vector Algebra
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Q)

Find the area of the triangle with vertices $A(1, 1, 2), B(2, 3, 5)$ and $C(1, 5, 5)$.

$\begin{array}{1 1}(A) \large\frac{\sqrt{61}}{2} sq.units \\ (B) \large\frac{\sqrt{48}}{2} sq.units \\ (C) \sqrt{48} sq.units \\(D) \sqrt{61} sq.units\end{array} $

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