A percent error depends on the size of the measurement as well as the error itself. It's very intuitive to think about: If you're measuring a piece of paper and you're off by 4 cm, you'll have problems; if you're measuring the moon, that's nothing. A bigger percent error is a bigger deal to an engineer. You can calculate it the same way as any percentage: Divide the error by the total length of the measurement, then multiply by 100 to convert it from a proportion to a percentage.
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The difference between low percent error and high percent error is one is low and the other is high
The error in its area is then 2 percent....
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what is the percent error of 12m
The density is (its mass)/64 grams/cm3