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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 …) |
cord is a unit of area it equal ≡ 1.48644864 m2 ≡ 192 bd.
A rood /ˈruːd/ is an historic English and international inch-pound measure of area, as well as an archaic English measure of length.