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The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. 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.
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 units were based on "English measure" but used a linear perch measuring 7 yards (6.4 m) as opposed to the English rod of 5.5 yards (5.0 m). Thus, linear units such as the furlong and mile , which were defined in terms of perches, were longer by a factor of 14:11 (~27% more) in Irish measure, while units of area, such as the rood or acre ...
4,840 square yards; 43,560 square feet; 160 perches. A perch is equal to a square rod (1 square rod is 0.00625 acre) 4 roods; A furlong by a chain (furlong 220 yards, chain 22 yards) 40 rods by 4 rods, 160 rods 2 (historically fencing was often sold in 40 rod lengths [49]) 1 ⁄ 640 (0.0015625) square mile (1 square mile is equal to 640 acres)
For example, each of the following converts 1.2 km 2 to acres, square yards, and hectares. {{convert ... → 28 pounds per square inch (190,000 Pa) {{convert|28|psi ...
kilogram-force per square millimetre: kgf/mm 2: ≡ 1 kgf/mm 2 = 9.806 65 × 10 6 Pa [33] kip per square inch: ksi ≡ 1 kipf/sq in ≈ 6.894 757 × 10 6 Pa [33] long ton per square foot: ≡ 1 long ton × g 0 / 1 sq ft ≈ 1.072 517 801 1595 × 10 5 Pa: micrometre of mercury: μmHg ≡ 13 595.1 kg/m 3 × 1 μm × g 0 ≈ 0.001 torr ≈ 0.133 ...
The perch population has fared much better in Green Bay, an area with shallower water and higher nutrient levels. The DNR reported a 2023 sport catch of 122,153 perch in the bay. But it's a ...
Since an acre measured 10 square chains in Gunter's system, the entire process of land area measurement could be computed using measurements in chains, and then converted to acres by dividing the results by 10. [2] Hence 10 chains by 10 chains (100 square chains) equals 10 acres, 5 chains by 5 chains (25 square chains) equals 2.5 acres.