Question

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SOlve this question it is very very urgentttt .please
Plzzz help. Will mark the appropriate answer as the brainliest onnne

Answer 1

the magnitude is ....

$= \sqrt{3 {}^{2} + 4 {}^{2} + 12 {}^{2} } \\ = \sqrt{9 + 16 + 144} \\ = \sqrt{169} \\ = 13$

Answer 2

Answer:

with the help of vector addition