Historical origin Acre



farm-derived units of measurement:




the word acre derived old english æcer meaning open field , cognate west coast norwegian ækre , swedish åker, german acker, dutch akker, latin ager, sanskrit ajr, , greek αγρός ( agros ). in english, historically spelled aker.


the acre amount of land tillable yoke of oxen in 1 day. explains 1 definition area of rectangle sides of length 1 chain , 1 furlong. long, narrow strip of land more efficient plough square plot, since plough not have turned often. word furlong derives fact 1 furrow long.


before enactment of metric system, many countries in europe used own official acres. these differently sized in different countries, instance, historical french acre 4,221 square metres, whereas in germany many variants of acre existed there german states.


statutory values acre enacted in england, , subsequently, united kingdom, acts of:



edward i
edward iii
henry viii
george iv
queen victoria – british weights , measures act of 1878 defined containing 4,840 square yards.

historically, size of farms , landed estates in united kingdom expressed in acres (or acres, roods, , perches), if number of acres large might conveniently have been expressed in square miles. example, landowner might have been said own 32,000 acres of land, not 50 square miles of land.


the acre related square mile, 640 acres making 1 square mile. 1 mile 5280 feet (1760 yards). in western canada , western united states, divisions of land area typically based on square mile, , fractions thereof. if square mile divided quarters, each quarter has side length of  ⁄2 mile (880 yards) ,  ⁄4 square mile in area, or 160 acres. these subunits typically again divided quarters, each side being  ⁄4 mile long, , being  ⁄16 of square mile in area, or 40 acres. in united states, farmland typically divided such, , phrase 40 refer 40-acre parcel of farm. of canadian prairie provinces , midwest on square-mile grids surveying purposes.








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