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One acre equals 1 ⁄ 640 (0.0015625) square mile, 4,840 square yards, 43,560 square feet, [2] or about 4,047 square metres (0.4047 hectares) (see below).While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends upon the particular yard on which it is based.
This offset the drainage advantages of short furrows and meant furrows were made as long as possible. An acre is an area that is one furlong long and one chain (66 feet or 22 yards) wide. For this reason, the furlong was once also called an acre's length, [2] though in modern usage an area of one acre can be of any shape. The term furlong, or ...
In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters. The rod is useful as a unit of length because integer multiples of it can form one acre of square measure (area).
Metric Indian marla Pakistani marla 1 square foot (144 square inches) 0.040 sarsahi 0.033 karm 1 square yard (9 sq. feet) ... 247.1 acres (0.386 sq. miles)
A square 5 perches on each side, or one quarter of an acre. acre, or arpent carré: 48 400 ~5107 m 2 ~6108 sq yd, or ~1.262 acres The French acre is a square 10 perches (one arpent) on each side. (Does not exactly correspond to the English acre, which is defined as 43 560 square feet.) North America: perche du roi carrée: 324 ~34.19 m 2 ~40.89 ...
Different areas have different size of Bigha, [7] hence this system is no longer used since 1957 when it was replaced by the standardised Acre-Kanal-Marla based meter system. Acre-Kanal-Marla system (currently used, standardised metre system) 1 Karam = 66 inch; 1 Sarsari = 1 Karam X 1 Karam; 9 Sarsari = 1 Marla; 20 Marla = 1 Kanal; 8 Kanal = 1 ...
The metric system of measurement was first given a legal basis in 1795 by the French Revolutionary government. The law of 18 Germinal, Year III (7 April 1795) defined five units of measure: [18] The metre for length; The are (100 m 2) for area [of land] The stère (1 m 3) for volume of stacked firewood [19] The litre (1 dm 3) for volumes of liquid
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 (1,233.5 m 3). There has been two definitions of the acre-foot (differing by about 0.0006%), using either the international foot (0.3048 m) or a U.S. survey foot (exactly 1200 / 3937 meters since