What metric unit would you use to find the metric unit of a door?

Answer 1

There is no such thing as a "metric unit" for a door. If you mean measurement, you would use either metres (m), decimetres (dm), centimetres (cm), or millimetres (mm). There are 10mm in 1cm, 10cm in 1dm, and 10dm in 1m. Metres converted to the smaller units are as follows: 1000mm, 100cm, and 10dm. Some examples of door measurements in the different units are 1.9m, 19dm, 190cm, and 1900mm (dm is the least used of these four, cm and m the most common, and mm are usually only used on small objects).