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  2. Katha (unit) - Wikipedia

    en.wikipedia.org/wiki/Katha_(unit)

    In Bangladesh, one katha is standardized to 720 square feet (67 m 2), and 20 katha equals 1 bigha.. 1 Katha (কাঠা) = 720 sq. feet = 66.88 sq. metre = 1.652 Decimal (শতাংশ/ শতক)

  3. Orders of magnitude (area) - Wikipedia

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

    1 mega square meter M(m 2) 1 square kilometre (km 2) 1.76 km 2: New Century Global Center, Chengdu, China (largest building by total floor area) 2 km 2: Monaco (country ranked 192nd by area) [49] 2.59 km 2: 1 square mile [50] 2.9 km 2: City of London (not all of modern London) [51] 10 7 59.5 km 2: Manhattan Island (land area) [52] 61 km 2: San ...

  4. Maltese units of measurement - Wikipedia

    en.wikipedia.org/wiki/Maltese_units_of_measurement

    Table of area (land) units Unit Plural Relative value Metric value Imperial value Notes kejla: kejliet 1 ⁄ 60 ~18.74 m 2 ~22.41 sq yd siegħ: sigħan 1 ⁄ 6 ~187.4 m 2 ~224.1 sq yd

  5. Rai, ngan, and tarang wa - Wikipedia

    en.wikipedia.org/wiki/Rai,_ngan,_and_tarang_wa

    The rai, [a] ngan, [b] and tarang wa or square wa [c] are customary Thai units of area, used in the measurement of land.They are defined as exactly 1,600, 400, and 4 square metres, respectively (17,222, 4,306, and 43 sq ft).

  6. Square kilometre - Wikipedia

    en.wikipedia.org/wiki/Square_kilometre

    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.. 1 km 2 is equal to: . 1,000,000 square metres (m 2)

  7. Orders of magnitude (length) - Wikipedia

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

    Factor () Multiple Value Item 0 0 0 Singularity: 10 −35: 1 Planck length: 0.0000162 qm Planck length; typical scale of hypothetical loop quantum gravity or size of a hypothetical string and of branes; according to string theory, lengths smaller than this do not make any physical sense. [1]

  8. Bigha - Wikipedia

    en.wikipedia.org/wiki/Bigha

    In Assam, a bigha is 14,400 square feet (1,340 m 2) or 1,600 sq yard.One bigha is divided into 5 Katha. [2] [3] Each Katha consists of 20 Lessa.Hence each Katha is 2,880 square feet (268 m 2) in area, although this may vary within different regions of Assam. 4 bighas together are further termed as a Pura.

  9. Surface brightness - Wikipedia

    en.wikipedia.org/wiki/Surface_brightness

    In astronomy, surface brightness (SB) quantifies the apparent brightness or flux density per unit angular area of a spatially extended object such as a galaxy or nebula, or of the night sky background.