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Calculat.org

Oppervlakte en omtrek

Online calculators voeren een berekening van de omtrek van figuuren uit.
Op de site kunt U ook formules, diagrammen en berekening procedures vinden.

Rekenmachines

$$ \begin{aligned} A &= \pi r^2 \\ \\ O &= 2 \cdot \pi r \end{aligned} $$

$$ \begin{aligned} A &= \frac{a h_a}{2} \\ \\ O &= a + b + c \end{aligned} $$

rechthoekige driehoek

$$ \begin{aligned} A &= \frac{ab}{2} \\ \\ O &= a + b + c \end{aligned} $$

$$ \begin{aligned} A &= a \cdot a = a^2 \\ \\ O &= 4 \cdot a \end{aligned} $$

$$ \begin{aligned} A &= ab \\ \\ O &= 2 \cdot (a + b) \end{aligned} $$

$$ \begin{aligned} A &= a h \\ \\ O &= 4 \cdot a \end{aligned} $$

$$ \begin{aligned} A &= a h_a = b h_b \\ \\ O &= 2 \cdot (a + b) \end{aligned} $$

$$ \begin{aligned} A &= \frac{(a + c)h}{2} \\ \\ O &= a + b + c + d \end{aligned} $$

regelmatige vijfhoek

$$ \begin{aligned} A &= \frac{\sqrt{25 + 10 \sqrt{5}}}{4} a^2 \\ \\ O &= 5 \cdot a \end{aligned} $$

regelmatige zeshoek

$$ \begin{aligned} A &= \frac{3 \sqrt{3}}{2} a^2 \\ \\ O &= 6 \cdot a \end{aligned} $$

regelmatige veelhoek

$$ \begin{aligned} A &= \frac{1}{4} n a^2 \cot\frac{180^\circ}{n} \\ \\ O &= n \cdot a \end{aligned} $$

stelling van Pythagoras

$$ \begin{aligned} c^2 = a^2 + b^2 \end{aligned} $$

Beoordeling

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