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The hectare (/ ˈ h ɛ k t ɛər,-t ɑːr /; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm 2), that is, 10,000 square metres (10,000 m 2), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is about 0.405 hectares and one hectare contains about ...
An area of one square kilometre consists of 100 hectares each containing 10,000 square metres. This page is a progressive and labelled list of the SI area orders of magnitude, with certain examples appended to some list objects.
The unit is still in use in many areas previously ruled by the Ottomans, although the new or metric dunam has been redefined (as of when, by who?) as exactly one decare (1,000 square metres [10,760 square feet]), which is 1/10 hectare (1/10 × 10,000 square metres [107,640 square feet]), like the modern Greek royal stremma. [3]
The Byzantine or Morean stremma continued to vary depending on the period and the quality of the land, but usually enclosed an area between 900–1,900 m 2 (9,700–20,500 sq ft). [2] It was originally also known as the "plethron" but this was eventually replaced by "stremma", derived from the verb for "turning" the ground with a Byzantine plow.
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.
The square kilometre (square kilometer in American spelling; symbol: km 2) is a multiple of the square metre, the SI unit of area or surface area. In the SI unit of area (m 2), 1 km 2 is equal to 1M(m 2). 1 km 2 is equal to: 1,000,000 square metres (m 2) 100 hectares (ha) It is also approximately equal to: 0.3861 square miles [2] 247.1 acres [3 ...
1,000 meters: 0.62137 Miles or 3,280 Feet & 10 Inches ... Hectare: 10,000 square meters: 2.471 acres Are: 100 square meters: 119.6 square yards Centare: 1 square ...
[1] [2] In Afghanistan, however, it is standardized at 2,000 square metres (0.49 acres). [ 2 ] [ 3 ] The jerib was roughly equivalent to the other customary land measures in south Asia and the Middle East, the Indian bigha and the Sumerian iku , varying between 1,600 and 3,600 square metres (0.40 and 0.89 acres).