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  1. en.wikipedia.org › wiki › LengthLength - Wikipedia

    Length is the measure of one spatial dimension, whereas area is a measure of two dimensions (length squared) and volume is a measure of three dimensions (length cubed). History. Measurement has been important ever since humans settled from nomadic lifestyles and started using building materials, occupying land and trading with neighbours.

  2. A metre (US spelling, meter) is the basic unit of length in the SI measurement system. The symbol for the metre is m. The first meaning (in the French Revolution) was one ten-millionth of the distance between the Earth 's equator and the North Pole along the Paris meridian. [1]