The answer depends on whether you are measuring the drops from a slow drip or the number of drops of water in an ocean!
3 significant figures.
If the conversion factor is exact, then the number of significant figures in the answer is the same as the number of significant figures in the original number.If the conversion factor is an approximation, then the number of significant figures in the result is the lesser of this number and the number of significant figures in the original number.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
There are 3 significant figures in this number.
There are 3 significant figures in this number.
The degree of accuracy of the measuring instrument.
The measurement of the keyword "length" typically has an infinite number of significant figures, as it can vary in precision depending on the context and measuring instrument used.
No, the units are independent of the accuracy. If you are measuring volume, how accurate the measurement is (or isn't) will not affect what you are measuring - it will always be volume.
When multiplying numbers with significant figures, count the total number of significant figures in each number being multiplied. The result should have the same number of significant figures as the number with the fewest significant figures. Round the final answer to that number of significant figures.
3 significant figures.
Three significant figures are in this number.
If the conversion factor is exact, then the number of significant figures in the answer is the same as the number of significant figures in the original number.If the conversion factor is an approximation, then the number of significant figures in the result is the lesser of this number and the number of significant figures in the original number.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
There are six significant figures in this number (i.e. all the figures here are significant).
There are 3 significant figures in this number.
There are 3 significant figures in this number.
There are 4 significant figures in this number.