If you use meters for length, then the derived unit is the square meter.
Yes, area is a derived quantity.
Length is fundamental, area is derived.
An area, in its simplest form is derived by multiplying together two lots of the basic quantities - lengths.
Pressure is defined as the amount of force applied to a given amount of area. Therefore pressure is derived from force and distance. Force itself is derived from time, distance, and mass and area is derived from distance.
Area of a circle in square units = pi*radius2
The square meter.
It is area and density.
Area is length x length, or length squared.
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.
derived quantities
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.
Pressure = force / area.