Hectare - Wikipedia
The hectare (/ ˈ h ɛ k t ɛər / or / ˈ h ɛ k t ɑːr /; SI symbol: ha) is an SI accepted metric system unit of area equal to 100 ares (10,000 m 2) or 1 square hectometre (hm 2) and primarily used in the measurement of land as a metric replacement for the imp...