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  2. List of skyscrapers by floor area - Wikipedia

    en.wikipedia.org/wiki/List_of_skyscrapers_by...

    This list of skyscrapers by floor area includes the largest skyscrapers in the world, measured in square meters (m 2) and square feet (sq ft). To qualify as a skyscraper, a structure must be self-supporting, without relying on tension cables or external supports for stability, and must reach a minimum height of 150 meters (492 feet).

  3. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    1.6 × 10 −5 quectometers (1.6 × 10 −35 meters) – the Planck length (Measures of distance shorter than this do not make physical sense, according to current theories of physics.) 1 qm – 1 quectometer, the smallest named subdivision of the meter in the SI base unit of length, one nonillionth of a meter. [55]

  4. List of city squares by size - Wikipedia

    en.wikipedia.org/wiki/List_of_city_squares_by_size

    City square City Country Area Dimensions, notes Year Photo Ref (m 2) [1] (ft 2) ; Xinghai Square: Dalian China 1,760,000 18,900,000: Commemorates the centenary of the founding of the city

  5. Metre - Wikipedia

    en.wikipedia.org/wiki/Metre

    One metre is exactly equivalent to ⁠ 5 000 / 127 ⁠ inches and to ⁠ 1 250 / 1 143 ⁠ yards. A simple mnemonic to assist with conversion is "three 3s": 1 metre is nearly equivalent to 3 feet 3 + 3 ⁄ 8 inches. This gives an overestimate of 0.125 mm. The ancient Egyptian cubit was about 0.5 m (surviving rods are 523–529 mm). [27]

  6. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    [25] [26] The standard FIFA football pitch for international matches is 105 m (344 ft) long by 68 m (223 ft) wide (7,140 m 2 or 0.714 ha or 1.76 acres); FIFA allows for a variance of up to 5 m (16.4 ft) in length in either direction and 7 m (23.0 ft) more or 4 m (13.1 ft) less in width (and larger departures if the pitch is not used for ...

  7. Square metre - Wikipedia

    en.wikipedia.org/wiki/Square_metre

    Comparison of 1 square metre with some Imperial and metric units of area. The square metre (international spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the unit of area in the International System of Units (SI) with symbol m 2. [1] It is the area of a square with sides one metre in ...

  8. 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 ...

  9. Olympic-size swimming pool - Wikipedia

    en.wikipedia.org/wiki/Olympic-size_swimming_pool

    If starting blocks are used, then there must be a minimum depth of 1.35 metres (4.4 ft) from between 1 metre (3 ft 3 in) from the end of the pool to at least 6 metres (19 ft 8 in) from the end of the pool. At all other points, the minimum depth is 1 metre (3 ft 3 in). [3]