What unit can be used to describe an objects length?

Answer 1

Some units of length are:

-- inch

-- nanometer

-- foot

-- kilometer

-- yard

-- Ångström

-- light-year

-- centimeter

-- furlong

-- Planck length

-- mile

-- meter

-- parsec

Any unit of length can be used to describe the length of any object. But the

smartest choice is the unit that produces the most convenient number ...

one that's not too large, not too small, and easy to write down, remember,

and tell to others. It only depends on the size of the object.