There sure is a bunch of neat math built around the chain. With 80 chains to
a mile and 43560 square feet per acre. Lets see 640 acres to the square
mile. Sq root of 4356 = 66. Sounds like an easy way to mark off the
south 40 to me. And even some surveyors in the US want to go metric. Great
for the calculator salesmen.
Mason
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