Beispiel Nr: 12
$ \text{Gegeben:}\\\text{Fläche} \qquad A \qquad [m^{2}] \\ \text{Länge} \qquad a \qquad [m] \\ \\ \text{Gesucht:} \\\text{Breite} \qquad b \qquad [m] \\ \\ b = \frac{A}{a}\\ \textbf{Gegeben:} \\ A=-1m^{2} \qquad a=3\frac{1}{5}m \qquad \\ \\ \textbf{Rechnung:} \\ b = \frac{A}{a} \\ A=-1m^{2}\\ a=3\frac{1}{5}m\\ b = \frac{-1m^{2}}{3\frac{1}{5}m}\\\\b=-\frac{5}{16}m \\ \small \begin{array}{|l|} \hline A=\\ \hline -1 m^2 \\ \hline -100 dm^2 \\ \hline -10^{4} cm^2 \\ \hline -10^{6} mm^2 \\ \hline -0,01 a \\ \hline -0,0001 ha \\ \hline -10^{-6} km^2 \\ \hline \end{array}\\ \small \begin{array}{|l|} \hline a=\\ \hline 3,2 m \\ \hline 32 dm \\ \hline 320 cm \\ \hline 3,2\cdot 10^{3} mm \\ \hline 3,2\cdot 10^{6} \mu m \\ \hline 0,0032 km \\ \hline \end{array}\\ \small \begin{array}{|l|} \hline b=\\ \hline -0,313 m \\ \hline -3,13 dm \\ \hline -31,3 cm \\ \hline -313 mm \\ \hline -3,13\cdot 10^{5} \mu m \\ \hline -0,000313 km \\ \hline \end{array}\\$