How big is the opening?
Ralph
Easy-peasy, assuming the 2.4 acre opening is a correct value:
https://www.omnicalculator.com/math/octagon
("Prosthetic Math Brain" for the rest of us, who simply aren't wired as Marv,
and in Imperial units for the yet Non-Metricated patients here)
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Last edited by DIYSwede; Jul 23, 2021 at 02:52 AM.
Altair (Jul 23, 2021)
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