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Vectors: Magnitude
The magnitude of the vector 4 i + 5 j – 7 k is to 3 dps.

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Worked Solution:

The magnitude (length) of this vector is √( 42 + 52 + (–7)2 ) = √90 = 9.487 to 3 dps.

© MEI Produced by Dr Ron Knott, revised 15 May 2007
tom . button [AT] mei . org . uk 		Test reference: VectorsMag.html?ref=29898