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2. Rod (unit) - Wikipedia

   en.wikipedia.org/wiki/Rod_(unit)

   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. An acre is therefore 160 square ...

3. Goat grazing problem - Wikipedia

   en.wikipedia.org/wiki/Goat_grazing_problem

   The goat grazing problem is either of two related problems in recreational mathematics involving a tethered goat grazing a circular area: the interior grazing problem and the exterior grazing problem. The former involves grazing the interior of a circular area, and the latter, grazing an exterior of a circular area.

4. Section (United States land surveying) - Wikipedia

   en.wikipedia.org/wiki/Section_(United_States...

   Sections are customarily surveyed into smaller squares by repeated halving and quartering. A quarter section is 160 acres (65 ha) and a "quarter-quarter section" is 40 acres (16 ha). In 1832 the smallest area of land that could be acquired was reduced to the 40-acre (16 ha) quarter-quarter section, and this size parcel became entrenched in ...

5. Acre - Wikipedia

   en.wikipedia.org/wiki/Acre

   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.

6. Acre-foot - Wikipedia

   en.wikipedia.org/wiki/Acre-foot

   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 ...

7. Measurement of land in Punjab - Wikipedia

   en.wikipedia.org/wiki/Measurement_of_land_in_Punjab

   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.