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If a = 3, b = 4, c = 5 each one of veca,...

If a = 3, b = 4, c = 5 each one of `veca, vecb` & `vecc` is perpendicular to the sum of the remaining then `|veca + vecb + vecc|` is equal to

A

`(5)/(sqrt(2))`

B

`(2)/(sqrt(5))`

C

`5sqrt(2)`

D

`sqrt(5)`

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The correct Answer is:
C
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