Embarrassing Significant Figures question

[DrummingAtom]

Homework Statement

What's the magnitude of A, when A = 4i+4j ?

Homework Equations

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.

 

[rpf_rr]

you should write 6