Answer:
0.007349 to 3 significant figure=0.00735
Explanation:
Approximate 0.007349 to 3 significant figure
Significant figure start from 1 to 9 with the exclusion of 0
From the question above, there are two zeros after the decimal point, so it will be ignored because it is not a significant figure.
0.007349
The first significant number is 7 after 0
The second significant number is 3
The next
The third significant number is 4
The fourth significant number is 9
We want to approximate to three significant figure, so, all figure after 4(third significant figure) will be rounded up or down.
If the numbers are below 5(0, 1,2,3,4) they will be rounded down to 0
If the numbers are above 4(5,6,7,8,9), they will be rounded up to 1
So the number after 4 is 9, therefore it will be rounded up to make 4=5
0.007349 to 3 significant figure=0.00735