The best-known system of units is the SI, so I'll use it as an example. SI has several "base units", like meter (for length), kilogram (for mass), and seconds (for time) (a total of 7 base units). Other units are derived from the seven base units; for example, areas are measured in meters2, volumes in meters3, speeds and velocities in meters/second, etc.
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It is a measure of mass per unit volume and is derived using measures of mass and lengths in three orthogonal dimensions.
yes it is,it is derived by cubing the fundamental unit of length
The measure unit of a kilometer stick is kilometer.
Go to pg. 18 and in the 2nd paragraph you will find the answer. :D
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