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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.
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
1 cent = 0.01 acre: Conversions ... Square feet 435.6000 Acres 0.01000000 Hectares 0.004046856 Square metres 40.46856 Square inches 62,726.40 Square yards
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. An acre is therefore 160 square rods or 10 square chains. The name perch derives from the Ancient Roman unit, the pertica.
The North Canton City School District board approved an agreement to get 10 acres and $2.5 million ... the developers plans to build about 226 apartments and about 30,000 square feet of restaurant ...
One barn is equal to 1.0 × 10 −28 m 2. The name derives from the folk expressions "As big as a barn," and "Couldn't hit the broad side of a barn", used by particle accelerator physicists to refer to the probability of achieving a collision between particles. For nuclear purposes, 1.0 × 10 −28 m 2 is actually rather large. [25]
This corresponds to a well-stacked woodpile, 4 feet deep by 4 feet high by 8 feet wide (122 cm × 122 cm × 244 cm), or any other arrangement of linear measurements that yields the same volume. A more unusual measurement for firewood is the "rick" or face cord.
List of orders of magnitude for areas 10 27 square metres and larger. Factor (m 2) Multiple Value Item 10 30: 1 square petametre (Pm 2) 10 31: 10 Pm 2: 10 32: 200 Pm 2: Roughly the surface area of an Oort Cloud: 300 Pm 2: Roughly the surface area of a Bok globule: 10 33: 1 000 Pm 2: 10 34: 30 000 Pm 2: Roughly the surface area of The Bubble ...