Acre

Unit of land measurement in the British Imperial and United States Customary systems, equal to 43,560 square feet, or 160 square rods. One acre is equivalent to 0.4047 hectares (4,047 square metres). Derived from Middle English aker (from Old English aecer) and akin to Latin ager (�field�), the acre had one origin in the typical area that could be plowed in one day with a yoke of oxen pulling a wooden