Square metre
Square metre The square metre (Commonwealth English) or square meter (American English) (symbol: m²) is the ... is defined as the area of a square whose sides measure exactly one metre. The square metre is derived from the SI ...
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Area
... Units Units for measuring surface area include: square metre = SI derived unit are = 100 square metres hectare = 10,000 square metres square kilometre = 1,000,000 square metres square megametre = 10 12 square ...
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Orders of magnitude (area)
... hbar}{c^3} ... 10 -30 1 square femtometre (fm²) 10 -28 10 -28 m² ... of an uranium nucleus 10 -24 1 square picometre (pm²) 10 -20 1 square ångström (Ų) 10 -18 1 square nanometre (nm²) 10 -12 1 square micrometre (μm²) ... 10 -8 0.055 ...
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SI prefix
... precedence over any exponentiation; thus "km²" means square kilometre and not kilo–square metre. For example ... usually called a fermi. At large scales, megametre, gigametre, and larger are rarely used. Often ...
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Metric system
... used for some units: the expressions hectometre, megametre and megagram are hardly ever heard, neither ... ares, which is the area of a square 100 metres on a side (about 2 ...
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