The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1".
The first figure to be discarded is '6' and as this is greater than 5 then the previous figure (4) is increased by 1 (to 5).
29.46 when rounded off to three significant figures is 29.5.
Three significant figures would be 29.5cm.
3.738mL, when rounded to three significant figures, is 3.74mL
It rounds to 3.74mL
1,399.54 rounded to three significant figures is 1.40e3
79,966.92 rounded to three significant figures is 8.00e4
Three significant figures would be 29.5cm.
3.738mL, when rounded to three significant figures, is 3.74mL
29.5 cm
It is: 29.5 cm
It rounds to 3.74mL
16.558 rounded to three significant figures is 16.6
0.00721004 rounded to three significant figures is 0.00721
44.981 rounded to three significant figures is 45.0
0.00858345 rounded to three significant figures is 0.00858
1,399.54 rounded to three significant figures is 1.40e3
79,966.92 rounded to three significant figures is 8.00e4
0.00721004 rounded into three significant figures is 0.00721