To convert the number 0.004758 to three significant figures, we need to round it off appropriately.
Identify the significant figures:
Determine the significant figures based on the three most significant digits:
Round the number:
Look at the digit immediately after the third significant figure, which is 7.
Since 7 is 5 or greater, we round up the third significant figure (5).
Apply rounding:
Therefore, 0.004758 rounded to three significant figures is **0.00476**.
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6,256 rounded to 1 significant figure is 6,000
No, to three sf.
It is then 30,000 rounded to 1 significant figure
Rounded to 1 significant figure it is 0.4
6694 rounded to 1 significant figure is 7000