Because it is derived - or based on - other units. In this case, the meter. 1 square meter = 1 meter x 1 meter.
The SI unit of area is the square meter (m2), which is a derived unit.
In the SI, the square meter is derived from the meter (meter x meter). But in general, which units are derived and which are base units really depends on the system of measurement chosen. You could define a unit of area as a base unit, and derive a length as the square root of that - although I don't think any serious system of units has actually done that so far.
That's precisely what it's called - "square meter".
A square meter (m2) is a derived unit of measure of surface area in the metric system. A yard is a traditional English unit of measure of distance.
There is no SI "base unit" for area. Originally there was a unit called an are which was equivalent to 100 square meters, but this has fallen out of favor. The hectare (100 are, or 10,000 square meters, or the area of a square 100 meters on a side) is also sometimes used, but it's not a base unit.Area is a derived quantity (from the unit for length), so the most appropriate SI unit for area is the square meter.
The square meter.
If you use meters for length, then the derived unit is the square meter.
The SI unit of area is the square meter (m2), which is a derived unit.
The derived unit of pressure in the International System of Units (SI) is the Pascal (Pa). It is defined as one Newton per square meter (N/m²).
It means that it is defined on the basis of other units. For example, in the SI, the meter and the second are two of the seven "base units"; the unit for area is the square meter (meter x meter), so it is a DERIVED unit; so is the unit for speed, meters / second.
The SI unit for area is the square meter (m2), though hectare can also be used. One hectare equals 100 square meters.
In the SI, the square meter is derived from the meter (meter x meter). But in general, which units are derived and which are base units really depends on the system of measurement chosen. You could define a unit of area as a base unit, and derive a length as the square root of that - although I don't think any serious system of units has actually done that so far.
That's precisely what it's called - "square meter".
A square meter (m2) is a derived unit of measure of surface area in the metric system. A yard is a traditional English unit of measure of distance.
There is no SI "base unit" for area. Originally there was a unit called an are which was equivalent to 100 square meters, but this has fallen out of favor. The hectare (100 are, or 10,000 square meters, or the area of a square 100 meters on a side) is also sometimes used, but it's not a base unit.Area is a derived quantity (from the unit for length), so the most appropriate SI unit for area is the square meter.
The derived unit of pressure is the pascal (Pa), which is equivalent to one newton per square meter. It is commonly used to measure pressure in various systems, such as in meteorology and physics.
A hectare is a derived unit of area in the metric system, equivalent to 10,000 square meters. It is commonly used in land measurement and agriculture. The hectare is not a fundamental unit, as it is based on the square of the meter, which is the fundamental unit of length in the International System of Units (SI).