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The acre ( / ˈeɪkər / AY-kər) is a unit of land area used in the British imperial and the United States customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet ), which is exactly equal to 10 square chains, 640 of a square mile, 4,840 square yards, or 43,560 square feet, and approximately 4,047 m, or about 40% of a hectare. Based upon the ...
The acre-foot is a non- SI unit of volume equal to about 1,233 m 3 commonly used in the United States in reference to large-scale water resources, such as reservoirs, aqueducts, canals, sewer flow capacity, irrigation water, [1] and river flows. An acre-foot equals approximately an eight-lane swimming pool, 82 ft (25 m) long, 52 ft (16 m) wide ...
1 Chain = 100 links or 66 feet 1 Mile = 80 chains or 5,280 feet Area Measurement 1 Acre = 10 square chains or 43,560 square feet 1 square mile = 640 acres — Lola Cazier (1976), Surveys and Surveyors of the Public Domain 1785-1975, page 15 Modern use and historic cultural references[edit]
Current standard measurement of farm land. A commonly used land measurement unit in Punjab is karam or square karam. [3] Other units include the Sarsai and units listed. [4] This the current system of measurement of farm land. All Units. 1 karam × 1 karam = 1 sq. karam. 5.5 feet × 5.5 feet = 30.25 sq. feet. 30.25 square feet = 1 Sarsai.
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 rod is useful as a unit of length because integer multiples of it can form one acre of square measure (area). The 'perfect acre' [2] is a rectangular area of 43,560 square feet, bounded by sides 660 feet (a furlong) long and 66 feet (a chain) wide (220 yards by 22 yards) or, equivalently, 40 rods by 4 rods.
Measurement of area. Rood is an English unit of area equal to one quarter of an acre [2] or 10,890 square feet, exactly 1,011.7141056 m 2. A rectangle that is one furlong (i.e., 10 chains, or 40 rods) in length and one rod in width is one rood in area, as is any space comprising 40 perches (a perch being one square rod).
The square foot ( pl. square feet; abbreviated sq ft, sf, or ft2; also denoted by ' 2 and ⏍) is an imperial unit and U.S. customary unit (non- SI, non- metric) of area, used mainly in the United States and partially in Canada, the United Kingdom, Bangladesh, India, Nepal, Pakistan, Ghana, Liberia, Malaysia, Myanmar, Singapore and Hong Kong. [citation needed] It is defined as the area of a ...