What is the SI unit of area?

The SI unit of area is square meters, denoted as m². Area represents the extent of a two-dimensional surface, and is calculated by multiplying the length of an object by its width, both measured in meters. This results in units of length multiplied together, which gives rise to square meters. For instance, if a rectangle measures 5 meters in length and 3 meters in width, the area will be 5 m × 3 m = 15 m².

Other units mentioned do not represent area: "m" represents length, "m³" represents volume (which involves three dimensions), and "m⁴" would suggest a four-dimensional measure, which is not applicable in typical physical contexts. Understanding these distinctions is crucial for correctly identifying and utilizing different SI units in physics and engineering.