Question

Why should we have standard unit of measurement? Explain giving example:

Answer 1

The standard unit of measurement is necessary because lack of standard unit of measurement would cause confusion and a waste of time in converting from one unit to another all the time.

Answer 2

A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. Any other quantity of that kind can be expressed as a multiple of the unit of measurement. For example, a length is a physical quantity.