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If |vec a| = 4, |vec b| = 2, |vec c| = 6...

If `|vec a| = 4, |vec b| = 2, |vec c| = 6` and each of the angles between the vectors is `60^(o)` then `|vec a + vec b + vec c| =`

A

10

B

`sqrt(56)`

C

sqrt44`

D

5

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A
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