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≡ 300 mm ≡ 0.3 m ... ≡ One rpm equals one rotation completed around a fixed axis in one minute of time. ... = 0.092 903 04 m 2 /s: square metre per second (SI unit)
1 km 2 means one square kilometre, or the area of a square of 1000 m by 1000 m. In other words, an area of 1 000 000 square metres and not 1000 square metres. 2 Mm 3 means two cubic megametres, or the volume of two cubes of 1 000 000 m by 1 000 000 m by 1 000 000 m, i.e. 2 × 10 18 m 3, and not 2 000 000 cubic metres (2 × 10 6 m 3).
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]
The barn (b) is a unit of area used in nuclear physics equal to one hundred femtometres squared (100 fm 2 = 10 −28 m 2). The are (a) is a unit of area equal to 100 m 2. The decare (daa) is a unit of area equal to 1000 m 2. The hectare (ha) is a unit of area equal to 10 000 m 2 (0.01 km 2).
Sq m is an abbreviation for: Square mile , a unit of surface area in the systems of Imperial and U.S. units and more usually abbreviated to sq mile or sq mi Square metre , a unit of surface area in the metric system and more usually abbreviated to m 2
The SI has special names for 22 of these coherent derived units (for example, hertz, the SI unit of measurement of frequency), but the rest merely reflect their derivation: for example, the square metre (m 2), the SI derived unit of area; and the kilogram per cubic metre (kg/m 3 or kg⋅m −3), the SI derived unit of density.
(exp x is also written as e x.) expi – cos + i sin function. (Also written as cis.) expm1 – exponential minus 1 function. (Also written as exp1m.) exp1m – exponential minus 1 function. (Also written as expm1.) Ext – Ext functor. ext – exterior. extr – a set of extreme points of a set.
Length (m): The length of the equator is close to 40 000 000 m (more precisely 40 075 014.2 m). [23] In fact, the dimensions of our planet were used by the French Academy in the original definition of the metre; [ 24 ] most dining tabletops are about 0.75 metres high; [ 25 ] a very tall human (basketball forward) is about 2 metres tall.