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The precise conversion is 1 cuerda = 3,930.395625 m 2. [2] The term "Spanish acre" instead has been used sometimes by mainlanders. [1] A cuerda and an acre have often been treated as equal because they are nearly the same size. According to Carlos Menocal Villagran, [3] in Guatemala, the term cuerda refers to a unit of area and can have various ...
See Weight for detail of mass/weight distinction and conversion. Avoirdupois is a system of mass based on a pound of 16 ounces, while Troy weight is the system of mass where 12 troy ounces equals one troy pound. The symbol g 0 is used to denote standard gravity in order to avoid confusion with the (upright) g symbol for gram.
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.
Traditionally, the gauge of the national railway in Spain, now managed by Adif, is 1,668 mm (5 ft 5 + 21 ⁄ 32 in), known as Iberian gauge.This gauge (originally 1,674mm but then reduced slightly to allow interoperability with Portugal) was decided upon by a Parliamentary committee, after a report known as the Informe Subercase (named for its principal author) in 1844. [1]
With the revival of urban rail transport, metre-gauge light metros were built in some cities. The slightly-wider 1,009 mm ( 3 ft 3 + 23 ⁄ 32 in ) gauge is used in Sofia . Another similar gauge is 3 ft 6 in ( 1,067 mm ).
The term, yard derives from the Old English gerd, gyrd etc., which was used for branches, staves and measuring rods. [5] It is first attested in the late 7th century laws of Ine of Wessex, [6] where the "yard of land" mentioned [6] is the yardland, an old English unit of tax assessment equal to 1 ⁄ 4 hide.
A pi pie. Many pies are circular, and "pie" and π are homophones , making pie a frequent subject of pi puns . Perhaps because of the simplicity of its definition and its ubiquitous presence in formulae, π has been represented in popular culture more than other mathematical constructs.
The pink line, mostly underground, links Plaça Espanya, in Barcelona proper, with Sant Boi de Llobregat, through L'Hospitalet de Llobregat.It opened in 1912 as a narrow gauge train line (hence predating the first metro Line 3 by 12 years), and was known as S3 until 2003, hence the name of its suburban extended line (S33).