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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 …) |
With the adoption of the imperial system the kilderkin was redefined to be 18 imperial gallons, which is exactly 81.82962 litres or approximately 2.890 cubic feet.
The cup currently used in the United States for nutrition labelling is defined in United States law as 240 ml.
1 U.S. "legal" cup | = | 240 | millilitres |
= | 16 | international tablespoons | |
= | 12 | Australian tablespoons | |
≈ | 8.12 | U.S. customary fluid ounces | |
≈ | 8.45 | imperial fluid ounces |