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Vertices of a triangle are given by hati...

Vertices of a triangle are given by `hati+3hatj+2hatk` , `2hati-hatj+hatk` and `-hati+2hatj+3hatk` then area of triangle is (in units)

A

`sqrt(107)//2`

B

`sqrt(107)//6`

C

`sqrt((107)/(2))`

D

`sqrt(207)//3`

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The correct Answer is:
A
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