Question

what is unit of length​

Answer 1

Answer:

A unit of length refers to any arbitrarily chosen and accepted reference standard for measurement of length. The most common units in modern use are U.S. customary units in the United States and metric units elsewhere.

Answer 2

$\huge\pink{\tt{\tt{Solution:}}}$

A unit of length refers to any arbitrarily chosen and accepted reference standard for measurement of length. The most common units in modern use are U.S. customary units in the United States and metric units elsewhere.