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An acre is a measure of land area in Imperial units or U.S. customary units. It is equal to 43 560 square feet, or 4840 square yards. The precise meaning of this depends on the exact definition adopted for a foot: the international acre is 4046.8564 m², but the U.S. survey acre is 4046.8726 m². In the UK, an acre is defined in the Units of Measurement regulations 1995 as 4046.8564224 m².
A square mile has 640 acres, and a square parcel of land ¼ mile wide has 40 acres. A square parcel of land ½ mile on a side (¼ square mile) is 160 acres, the size of a homestead in the US. An area of land that is one furlong (220 yards) long and one chain (22 yards) wide has an area of one acre.
In the metric system, an acre is approximately 0.4047 hectareA hectare (symbol ha is a metric unit of surface area, equal to 100 ares (the name is a contraction of the SI prefix hecto + are . It is a non-SI unit currently accepted (although discouraged) for use with the SI. In India, also the abbreviation hac is us; to a good enough approximation for many purposes, it can be taken as 0.4 hectare. Conversely, a hectare is about 2.5 acres.
The acre was selected as approximately the amount of land tillable by one manThis article concerns how a man differs from women. For other meanings of man see Man (disambiguation). For other uses of boy see Boy (disambiguation Pioneer plaque sent to outer space A man is an male human adult, in contrast to an adult female, which is behind an ox in one dayA day is any of several different units of time. The word refers either to the period of light when the Sun is above the local horizon or to the full day covering a dark and a light period. Introduction Different definitions of the day are based on the ap. This explains its definition of in terms of the non-square one-chain by one-furlong parcel of land; a long narrow strip of land is more efficient to plough than a square plot, since the plough does not have to be turned so often. Statutory values were enacted in England by acts of
Edward IYork Minster King Edward I of England ( June 17, 1239 July 7, 1307), popularly known as Longshanks and the Hammer of the Scots , achieved fame as the monarch who conquered Wales and who kept Scotland under English domination. He reigned from 1272 to 1307,, Edward IIIEdward III ( 13 November 1312 21 June 1377) was one of the most successful English Kings of mediaeval times. His fifty-year reign began when his father Edward II was deposed on 25 January 1327, and lasted until 1377. Among his immediate predecessors, only, Henry VIIIHans Holbein the Younger Henry VIII ( 28 June 1491 28 January 1547) was King of England and Lord of Ireland (later King of Ireland) from 22 April 1509 until his death. He was the second monarch of the Tudor dynasty, succeeding his father, Henry VII. He is, and George IV;the British "Weights and Measures Act" of 1878 defined it as containing 4840 square yards.
An acre foot is a measure of volume used in the U.S. used to measure large volumes of water, an acre foot being the volume necessary to cover one acre to a depth of one foot, or 325,852.73 gallons. The volume of a reservoir may be measured in acre feet, e.g..