30,569 rounded off to 1 significant figure is 30,000
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0.6942 rounded off to 2 significant figures is 0.69
111.009mm rounded to four significant digits is 111.0mm
To convert the number 0.004758 to three significant figures, we need to round it off appropriately. Identify the significant figures: The given number, 0.004758, has 5 significant figures. Determine the significant figures based on the three most significant digits: The three most significant digits in 0.004758 are 4, 7, and 5. 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: The number rounded to three significant figures is 0.00476. Therefore, 0.004758 rounded to three significant figures is **0.00476**.
The correct representation when the number 0.007225 is rounded off to three significant figures is 0.00722
It is then 0.067 when rounded to 2 significant figures