Length
In
geometric measurements, length is the longest dimension of an object.[1] In other contexts "length"
is the measured dimension of an object. For example it is possible to cut a
length of a wire which is shorter than wire thickness.
Length may
be distinguished from height, which is vertical extent, and width
or breadth, which are the distance from side to side, measuring across the
object at right angles to the length. Length is a measure of one dimension,
whereas area is a measure of two dimensions (length squared) and volume
is a measure of three dimensions (length cubed). In most systems
of measurement, the
unit of length is a fundamental unit, from which other units are defined.