Answer :

significant figures are the numbers (that aren't 0)...
So... to 2 sig. fig 6.7493 is 6.7 (because the 4 is under 5 so rounds down)
Hope this helps :) :P
Significant figures are the numbers that is not a 0
So to 2 significant figures 6.7493 is 6.7.
We kept it 7 because the number after it is less than 5 so we round it down...
Hope I helped you with your question :) :P

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