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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 virgate, yardland, or yard of land (Latin: virgāta [terrae]) was an English unit of land. Primarily a measure of tax assessment rather than area, the virgate was usually (but not always) reckoned as 1⁄4 hide and notionally (but seldom exactly) equal to 30 acres. It was equivalent to two of the Danelaw's oxgangs.
a section is an area nominally one square mile (2.6 square kilometers), containing 640 acres (260 hectares), with 36 sections making up one survey township on a rectangular grid.