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Octagon |
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| $$\textbf{Areal af et octagon}$$ | ||||||
$$A = \frac{1}{4} · 8 · b^2 · \frac{\cos\big(\frac{\pi}{8}\big)}{\sin\big(\frac{\pi}{8}\big)} $$ | ||||||
| $$\textbf{Octagonets perimeter}$$ | ||||||
| $$P = 8 · b $$ | ||||||
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Octagon |
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| $$\textbf{Areal af et octagon}$$ | ||||||
| $$A = \frac{1}{4} · 8 · b^2 · \frac{\cos\big(\frac{\pi}{8}\big)}{\sin\big(\frac{\pi}{8}\big)} $$ | ||||||
| $$\textbf{Octagonets perimeter}$$ | ||||||
| $$P = 8 · b $$ | ||||||