Q 1401167928.     Find the area of the parallelogram determined by the sides `vec{i}+ vec{2j}+ vec{3k}` and `- vec{3i}- vec{2j}+ vec{k}`

A

`6 sqrt 5` sq. units

B

`6 ` sq. units

C

` sqrt 5` sq. units

D

`3 sqrt 5` sq. units

HINT

The area of a parallelogram whose sides are `vec a ` and ` vec b` is ` | vec a times vec b|`

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