$
\text{Gegeben:}\\\text{Kathete} \qquad b \qquad [m] \\
\text{Fläche des Dreiecks} \qquad A \qquad [m^{2}] \\
\\ \text{Gesucht:} \\\text{Gegenkathete zu} \alpha \qquad a \qquad [m] \\
\\ a = \frac{A \cdot 2}{ b}\\ \textbf{Gegeben:} \\ b=120m \qquad A=80m^{2} \qquad \\ \\ \textbf{Rechnung:} \\
a = \frac{A \cdot 2}{ b} \\
b=120m\\
A=80m^{2}\\
a = \frac{80m^{2} \cdot 2}{ 120m}\\\\a=1\frac{1}{3}m
\\\\\\ \small \begin{array}{|l|} \hline b=\\ \hline 120 m \\ \hline 1,2\cdot 10^{3} dm \\ \hline 1,2\cdot 10^{4} cm \\ \hline 1,2\cdot 10^{5} mm \\ \hline 1,2\cdot 10^{8} \mu m \\ \hline \end{array} \small \begin{array}{|l|} \hline A=\\ \hline 80 m^2 \\ \hline 8\cdot 10^{3} dm^2 \\ \hline 8\cdot 10^{5} cm^2 \\ \hline 8\cdot 10^{7} mm^2 \\ \hline \frac{4}{5} a \\ \hline \frac{1}{125} ha \\ \hline \end{array} \small \begin{array}{|l|} \hline a=\\ \hline 1\frac{1}{3} m \\ \hline 13\frac{1}{3} dm \\ \hline 133\frac{1}{3} cm \\ \hline 1333\frac{1}{3} mm \\ \hline 1333333\frac{1}{3} \mu m \\ \hline \end{array}$