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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 gigametre or Square gigameter is a metric unit of area, symbol Gm2, is a multiple of the of SI prefixes (giga) used with the metre.
The hide was an English unit of land measurement originally intended to represent the amount of land sufficient to support a household.