The liter is the metric unit used for determining volume.
The metric unit used is kilometer. It is written as km.
The most commonly used metric units for length are Millimetres, Centimetres, Metres and Kilometres.
The "meter" is.
meters and kilometers
The metre is the metric unit for distance. You can also use fractions like cm, or multiples like km.
that would be a hectometre, it is used in the metric system and is a hundred meters in distance.