The official SI unit is square meters, but the square of any other linear unit can be used as well, for example, square millimeters, square kilometers, square light-years, square parsecs, etc.
This depends on what unit you are using to measure in. However, area will always be measure in (unit)^2.
no, Acres is an Imperial Unit for the measure of area. The metric unit for area is the square meter.
Square feet is a good unit to measure the area of a room in a house.
A unit can be a measure of length. It is one-dimensional. A squared unit can be a measure of area. It is two-dimensional. A cubic unit can be a measure of volume. It is three-dimensional.
area, acre
It is the area.
A square unit is a measure of area, a foot is a linear unit. There are no area units in any linear measure.
They are used to measure quantities that are not basic. Length, for example, is a basic unit, but area and volume are not so derived units will be used to measure area and volume.
You could measure a small area.
you divide or multiply
cm2
Cubic kilometres.