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Pentagon |
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| $$\textbf{Areal af et pentagon}$$ | ||||||
$$A = \frac{1}{4} · 5 · b^2 · \frac{\cos\big(\frac{\pi}{5}\big)}{\sin\big(\frac{\pi}{5}\big)} $$ | ||||||
| $$\textbf{Pentagonets perimeter}$$ | ||||||
| $$P = 5 · b $$ | ||||||
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Pentagon |
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| $$\textbf{Areal af et pentagon}$$ | ||||||
| $$A = \frac{1}{4} · 5 · b^2 · \frac{\cos\big(\frac{\pi}{5}\big)}{\sin\big(\frac{\pi}{5}\big)} $$ | ||||||
| $$\textbf{Pentagonets perimeter}$$ | ||||||
| $$P = 5 · b $$ | ||||||