The zero at the end is significant. It indicates that the number has been rounded to the nearest hundred thousandths: it lies between 0.004295 and 0.004305 whereas if it had two sig figs it would have been rounded to the nearest ten thousandths and lie in the range (0.00425, 0.00435).
All non-zero digits are considered significant. Trailing zeros in a number containing a decimal point are significant.
It is then 2.64 when rounded to three significant figures
That depends on how many significant figures you are talking about.If three significant figures then 700 is the largest that rounds to 700.If four significant figures are to be rounded to three significant figures then 700.4If five significant figures are to be rounded to three significant figures then 700.49If six significant figures are to be rounded to three significant figures then 700.499etc.
0.33058 to three significant figures is 0.331
40.82 to three significant figures is 40.8
3.7162 to three significant figures is 3.72
It is then 2.64 when rounded to three significant figures
It has three significant figures.
There are 4 of them
That depends on how many significant figures you are talking about.If three significant figures then 700 is the largest that rounds to 700.If four significant figures are to be rounded to three significant figures then 700.4If five significant figures are to be rounded to three significant figures then 700.49If six significant figures are to be rounded to three significant figures then 700.499etc.
153.12 to three significant figures = 153
0.33058 to three significant figures is 0.331
95,723 to three significant figures is 95,700.
54,367 in three significant figures is 54,400.
40.82 to three significant figures is 40.8
3.7162 to three significant figures is 3.72
22.4 has three significant figures.
There are 6 significant figures in this number.