Assertion: survey acre | /r/HasProperty | about 4,046.872 square metres
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Source sentences:
text: The US survey acre is about 4,046.872 square metres; its exact value (4046+13,525,426/15,499,969 m2) is based on an inch defined by 1 metre = 39.37 inches exactly, as established by the Mendenhall Order of 1922.