The area of the parallelogram whose diagonals are \[\mathbf{a}=3\,\mathbf{i}+\mathbf{j}-2\mathbf{k}\] and \[\mathbf{b}=\mathbf{i}-3\,\mathbf{j}+4\,\mathbf{k}\] is [MP PET 1988, 93; MNR 1985]

The area of the parallelogram whose diagonals are \[\mathbf{a}=3\,\mat

1.	The area of the parallelogram whose diagonals are \[\mathbf{a}=3\,\mathbf{i}+\mathbf{j}-2\mathbf{k}\] and \[\mathbf{b}=\mathbf{i}-3\,\mathbf{j}+4\,\mathbf{k}\] is [MP PET 1988, 93; MNR 1985]
A.	\[10\sqrt{3}\]
B.	\[5\sqrt{3}\]
C.	8
D.	4
Answer» C. 8

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The area of the parallelogram whose diagonals are \[\mathbf{a}=3\,\mathbf{i}+\mathbf{j}-2\mathbf{k}\] and \[\mathbf{b}=\mathbf{i}-3\,\mathbf{j}+4\,\mathbf{k}\] is [MP PET 1988, 93; MNR 1985]

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