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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 …) |
The zettaliter or zettalitre is a common metric unit of volume. It is equal to 1018 cubic meters. Plural name is zettaliters.
The cubic hectometre or cubic hectometer is the unit of volume. Its symbol is hm3. It is the volume of a cube with edges one hectometre in length.