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The digits that are reported in an answer are called significant figures.
Out of all the measurements used in the calculation, find the one with the least number of significant digits. This will be the limiting factor of how many significant digits the answer should have.
Six
You can find lots of digits of pi online, in different places. But really, there is no practical use for any of those; having the value displayed on your scientific calculator - with 10 or 12 significant digits - or on the computer with 15 significant digits is more than enough for any calculation where you need pi.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
The digits that are reported in an answer are called significant figures.
Significant digits do help to reflect the true precision of a measurement. This is because often the last reported digit in a measurement has an unacceptably large error associated with it. Thus, only reporting significant digits is the most conservative practice. Sometimes, however, it helps to be more accurate on a single measurement. In this case, if the measurement device is reliable to the last reported digit it may be reported for the sake of accuracy.
Out of all the measurements used in the calculation, find the one with the least number of significant digits. This will be the limiting factor of how many significant digits the answer should have.
significant digits
How many significant digits does the following operation have?(40,200.0 * 0.000240) - 2.778
the precision of the answer must have the same number of significant digits as the measurement with the least significant digits- the site explains the rules and how to identify significant digits
Significant Figure.
How many significant digits does the following operation have(40,200.0 * 0.000240) - 2.778
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3 of them.
Six
Two