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Symbol | Definition |
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≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
Square zeptometre or Square zeptometer is a SI prefixes applied unit of area, symbol zm2, is a multiple of the of SI prefixes (zepto) used with the metre.
A microbarn (symbol: μb) is a unit of area equal to 10−34 m2.