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Skaičiuoklės

skritulys
skritulys
$$ \begin{aligned} S &= \pi r^2 \\ \\ C &= 2 \cdot \pi r \end{aligned} $$
trikampis
trikampis
$$ \begin{aligned} S &= \frac{a h_a}{2} \\ \\ P &= a + b + c \end{aligned} $$
statusis trikampis
statusis trikampis
$$ \begin{aligned} S &= \frac{ab}{2} \\ \\ P &= a + b + c \end{aligned} $$
kvadratas
kvadratas
$$ \begin{aligned} S &= a \cdot a = a^2 \\ \\ P &= 4 \cdot a \end{aligned} $$
stačiakampis
stačiakampis
$$ \begin{aligned} S &= ab \\ \\ P &= 2 \cdot (a + b) \end{aligned} $$
rombas
rombas
$$ \begin{aligned} S &= a h \\ \\ P &= 4 \cdot a \end{aligned} $$
lygiagretainis
lygiagretainis
$$ \begin{aligned} S &= a h_a = b h_b \\ \\ P &= 2 \cdot (a + b) \end{aligned} $$
trapecija
trapecija
$$ \begin{aligned} S &= \frac{(a + c)h}{2} \\ \\ P &= a + b + c + d \end{aligned} $$
Taisyklingasis penkiakampis
Taisyklingasis penkiakampis
$$ \begin{aligned} S &= \frac{\sqrt{25 + 10 \sqrt{5}}}{4} a^2 \\ \\ P &= 5 \cdot a \end{aligned} $$
Taisyklingasis šešiakampis
Taisyklingasis šešiakampis
$$ \begin{aligned} S &= \frac{3 \sqrt{3}}{2} a^2 \\ \\ P &= 6 \cdot a \end{aligned} $$
Taisyklingasis daugiakampis
Taisyklingasis daugiakampis
$$ \begin{aligned} S &= \frac{1}{4} n a^2 \cot\frac{180^\circ}{n} \\ \\ P &= n \cdot a \end{aligned} $$
Pitagoro teorema
Pitagoro teoremaabc
$$ \begin{aligned} c^2 = a^2 + b^2 \end{aligned} $$

Įvertinimas

4,4/5 (7×)

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