By using the distance formula. We calculate the difference of the like coordinates (e.g longitude1-longitude2 or latitude1-latitude2 etc) then add the "squares" of the differences. And finally taking the square root of the answer.
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Knowing the divisibility rules will help you by being able to recognize if a number has factors (other than one and itself) which are covered by the rules. This will save actually having to start doing divisions.
Road workers use math to calculate the amount of material used to resurface roadways and the distances which must be covered. By knowing exactly what is needed and where it will be done, they can perform their jobs more efficiently.
No possible to determine without knowing what you are trying to measure. You need to be able to calculate the density of the liquid (e.g. water vs mercury).
It is impossible to answer the question without knowing the shape of the base, which will determine how many sloped triangles there are.
"Sq.ft." is the area. It's a phrase used by people who actually don't understandthe whole concept. If you know the sq.ft., then you know the area, because they'rethe same thing. But you can't determine the perimeter from knowing the area.