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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 ...
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.
This is a list of wildfires across the United States during 2025, that have burned more than 1,000 acres (400 hectares), produced significant structural damage or casualties, or otherwise been notable. Acreage and containment figures may not be up to date.
The concept may vary by region or country. In Europe, they are characterized as beginning at 1,000 hectares (2,470 acres), in size, while in the United States and elsewhere, they may be classified beginning at 10,000 hectares (24,710 acres). Another figure used in the United States is 40,000 hectares (99,000 acres). [1]
In Israel and Turkey, the dunam is 1,000 square metres (10,764 sq ft), which is 1 decare. From the Ottoman period and through the early years of the British Mandate for Palestine , the size of a dunam was 919.3 square metres (9,895 sq ft), but in 1928, the metric dunam of 1,000 square metres (0.10 ha) was adopted, and this is still used today ...
Image comparing various units: square mile (the entire yellow square), square kilometre, hectare and acre, as well as a soccer field and a Manhattan block. An area of one square kilometre consists of 100 hectares each containing 10,000 square metres.
Parallel to the longer sides of the rectangle were the irrigation canals ordered by Argishti I. Various town buildings have been found scattered across the local hills, situated within the economic zone of Argištiḫinili, the total area of which was about 1,000 hectares (2,500 acres).
Over 1,000 hectares (2,500 acres) of bushland were burnt, and one of the firefighters later died. [8] In late November 2015 a fire burnt through 1,200 hectares (2,965 acres) of the reserve, destroying an estimated 90% of the Gilbert's potoroo habitat, [9] and killing an around 15 of the estimated 20 Gilbert's potoroos living within the reserve ...