Square centimetres.
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.
cm2
Cubic kilometres.
in feet
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.
Yes a unit for measure can be used as a tessellating shape:)
A unit square.
metres
Kilograms.
Square meters.
Metric
Any unit of area, such as square meters, hectares, square kilometers, etc.