Length

Length, abbreviated as l, also called distance, is the dimension from one point to another point or the dimension from one end to the other end of an object.

 

Length formula
\(\large{ \Delta l = l_f - l_i }\)
Symbol	English	Metric
\(\large{ \Delta l }\) = length differential	\(\large{ft}\)	\(\large{m}\)
\(\large{ l_f }\) = final length	\(\large{ft}\)	\(\large{m}\)
\(\large{ l_i }\) = initial length	\(\large{ft}\)	\(\large{m}\)