What is length?
is a measure of distance. The length of something is the distance between its
two ends. Small length is called short and big length is called long. For two
or three dimensional things, length is usually the longest side or edge.
is roughly the distance from Earth to the Sun. The actual distance varies as
Earth orbits the Sun. However, since 2012 it has been defined as exactly
149 597 870 700
is a unit of length in the imperial and United States customary systems of
measurement. It is equal to