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Rate this calculator:3.8 / 8 votesArea = 2 * (1 + √2) * side2
A = 2 * (1 + √2) * side2 =
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"Octagon Area" Calculators.net. STANDS4 LLC, 2023. Web. 8 Dec. 2023. <https://www.calculators.net/calculators/octagon-area>.