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Homework Help: Embarrassing Significant Figures question

  1. Aug 30, 2010 #1
    1. The problem statement, all variables and given/known data
    What's the magnitude of A, when A = 4i+4j ?

    2. Relevant equations

    3. The attempt at a solution
    The answer is sqrt(32), but do Sig Figs matter for this type of problem? Should I write it as 5.66? Or do I leave it as sqrt(32).

    P.S. - I know in a Math class I would write it as sqrt(32), but this is for a Physics class. Thanks all.
  2. jcsd
  3. Aug 30, 2010 #2
    you should write 6
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