If the diagonals of a parallelogram are represented \( \mathrm{P} \...

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If the diagonals of a parallelogram are represented
\( \mathrm{P} \)
W by the vectors \( 3 \hat{i}+\hat{j}-2 \hat{k} \) and \( \hat{i}+3 \hat{j}-4 \hat{k} \), then its area in square units, is
(1) \( 5 \sqrt{3} \)
(2) \( 6 \sqrt{3} \)
(3) \( \sqrt{42} \)
(4) \( \sqrt{28} \)
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