45.0 is the 44.981 to 3 significant figures.
58.5422 to three significant figures is 58.5 while to three decimal places is 58.542
Simply cut off the extra digits and round the third: 56.6
The answer depends on how many significant figures the number is to be rounded to. This information is not provided and so the question cannot be answered.
58.5
57.0
67.0
18.1
56.6
67.0
Five, two and five sig figs respectively.
When rounded to three significant figures, 3.738 mL becomes 3.74 mL. Remember, to round to three significant figures, you start counting from the first non-zero digit from the left.
There are 4 of them
There are three significant figures in the number 63400.
22.4 has three significant figures.
0.0034088 in three significant figures would be 0.00341
130
31,500
201
It is: 1040
21.3
0.00241
0.990
The number 10.989 rounded to 3 significant figures is 11.0
It's already there.
6.71 is 6.7050 is rounded to three significant figures.
2.540x10^4