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No. Measuring is getting an exact length. Estimating is guessing what the length is
It is necessary because measuring tools help you measure the length of an object accurately.
A ruler.
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It's more precise.
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An EDM or electronic distance measure. These are used by engineers in the construction industry for measuring distances. Hope this helps.
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A group of precise measurements are a group of repetitive measurements that are very close together. Ie the standard deviation between the measurements is small. Not to be confused with a accurate measurement! Think about it like this, if you measure a piece of wood 5 times and each time you get an identical answer then the measurement are said to be precise. If however if turns out that despite measuring the length 5 times and getting the same answer you discover that the length is significantly off from the "true" answer, then you were inaccurate!
it is used for measuring length of something
An error in measuring the radius (or diameter) of the cylinder has a greater effect on the accuracy of the volume calculation than an error in measuring the cylinder's length, since the volume is proportional to the square of the radius.
No. Measuring is getting an exact length. Estimating is guessing what the length is
It is necessary because measuring tools help you measure the length of an object accurately.
Use a ruler, measuring tape or other device for measuring length.