Beispiel Nr: 02
$\text{Gegeben:}\\\text{Höhe} \qquad c \qquad [m] \\ \text{Breite} \qquad b \qquad [m] \\ \text{Oberfläche} \qquad O \qquad [m^{2}] \\ \\ \text{Gesucht:} \\\text{Länge} \qquad a \qquad [m] \\ \\ a = \frac{O-2\cdot b\cdot c}{2\cdot (b+c)}\\ \textbf{Gegeben:} \\ c=4m \qquad b=2m \qquad O=9m^{2} \qquad \\ \\ \textbf{Rechnung:} \\ a = \frac{O-2\cdot b\cdot c}{2\cdot (b+c)} \\ c=4m\\ b=2m\\ O=9m^{2}\\ a = \frac{9m^{2}-2\cdot 2m\cdot 4m}{2\cdot (2m+4m)}\\\\a=-\frac{7}{12}m \\\\\\ \tiny \begin{array}{|l|} \hline c=\\ \hline 4 m \\ \hline 40 dm \\ \hline 400 cm \\ \hline 4\cdot 10^{3} mm \\ \hline 4\cdot 10^{6} \mu m \\ \hline 0,004 km \\ \hline \end{array} \tiny \begin{array}{|l|} \hline b=\\ \hline 2 m \\ \hline 20 dm \\ \hline 200 cm \\ \hline 2\cdot 10^{3} mm \\ \hline 2\cdot 10^{6} \mu m \\ \hline 0,002 km \\ \hline \end{array} \tiny \begin{array}{|l|} \hline O=\\ \hline 9 m^2 \\ \hline 900 dm^2 \\ \hline 9\cdot 10^{4} cm^2 \\ \hline 9\cdot 10^{6} mm^2 \\ \hline 0,09 a \\ \hline 0,0009 ha \\ \hline 9\cdot 10^{-6} km^2 \\ \hline \end{array} \tiny \begin{array}{|l|} \hline a=\\ \hline -0,583 m \\ \hline -5,83 dm \\ \hline -58,3 cm \\ \hline -583 mm \\ \hline -5,83\cdot 10^{5} \mu m \\ \hline -0,000583 km \\ \hline \end{array}$