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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.
The ancient Greek equivalent was the square plethron, which served as the Greeks' form of the acre. It was originally defined as the area plowed by a team of oxen in a day [1] but was nominally standardized as the area enclosed by a square 100 Greek feet to a side. It was the size of a Greek wrestling square.
As the name suggests, an acre-foot is defined as the volume of one acre of surface area to a depth of one 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 (1,233.5 m 3). There has been two definitions of the acre-foot (differing by about 0.0006%), using ...
The Roman emperor Hadrian's Villa at Tivoli, Italy was a complex of over 30 buildings constructed between 118 and the 130s AD, covering an area of at least 250 acres (1,000,000 square metres (11,000,000 sq ft)) of which much is still unexcavated. The villa was the greatest Roman example of an Alexandrian garden, recreating a sacred landscape.
1 Yard or Gaj = 36 Inch = 0.91 Metre = 3 feet; 1 Sq Yard = 9 Sq Feet; To convert Sq feet to Sq Yard = Divide by 9; 1 Marla is 25 Sq metres (272.25 sq feet) [5] 1 Kanal is 605 sq Yard (5445 sq feet) 1 Acre is 4840 Sq Yard
1 square zeptometre (zm 2) 1 zm 2 10 −36: 1 square attometre (am 2) 1 am 2 10 −30: 1 square femtometre (fm 2) 1 fm 2 10 −29 66.52 fm 2: Thomson cross-section of the electron [4] 10 −28 100 fm 2: 1 barn, roughly the cross-sectional area of a uranium nucleus [5] 10 −24: 1 square picometre (pm 2) 1 pm 2 10 −20: 1 square angstrom (Å 2 ...
The only thing that changed was the number of feet and yards in a rod or a furlong, and the number of square feet and square yards in an acre. The definition of the rod went from 15 old feet to 16 + 1 ⁄ 2 new feet, or from 5 old yards to 5 + 1 ⁄ 2 new yards. The furlong went from 600 old feet to 660 new feet, or from 200 old yards to 220 ...
1 anna = 7.5624 square yards = 6.3232 square metres; 1 gunta = 120.999 square yards = 101.1714 square metres = 16 annas; 1 guntha (R) = 33 ft (10 m) × 33 ft (10 m) = 1,089 sq ft (101.2 m 2) [1] [2] 40 gunthas = 1.0 acre; 4 acre = 1 fg