how many acre is equal to one hectare
Hectare The hectare (/ˈhɛktɛər, -tɑːr/; SI symbol: ha) is an SI accepted metric system unit of area equal to 100 ares (10,000 m2) or 1 square hectometre (hm2) and primarily used in the measurement of land as a metric replacement for the imperial acre.[1] An acre is about 0.405 hectare and one hectare contains about 2.47 acres.
Acre-foot Since an acre is defined as a chain by a furlong (i.e. 66 ft × 660 ft or 20.12 m × 201.17 m), an acre-foot is 43,560 cubic feet (1,233 m3).