$ \text{Gegeben:}\\\text{Grundlinie} \qquad g \qquad [m] \\ \text{Höhe} \qquad h \qquad [m] \\ \\ \text{Gesucht:} \\\text{Fläche} \qquad A \qquad [m^{2}] \\ \\ A = \frac{g \cdot h}{2}\\ \textbf{Gegeben:} \\ g=12m \qquad h=14m \qquad \\ \\ \textbf{Rechnung:} \\ A = \frac{g \cdot h}{2} \\ g=12m\\ h=14m\\ A = \frac{12m \cdot 14m}{2}\\\\A=84m^{2} \\\\\\ \small \begin{array}{|l|} \hline g=\\ \hline 12 m \\ \hline 120 dm \\ \hline 1,2\cdot 10^{3} cm \\ \hline 1,2\cdot 10^{4} mm \\ \hline 1,2\cdot 10^{7} \mu m \\ \hline \end{array} \small \begin{array}{|l|} \hline h=\\ \hline 14 m \\ \hline 140 dm \\ \hline 1,4\cdot 10^{3} cm \\ \hline 1,4\cdot 10^{4} mm \\ \hline 1,4\cdot 10^{7} \mu m \\ \hline \end{array} \small \begin{array}{|l|} \hline A=\\ \hline 84 m^2 \\ \hline 8,4\cdot 10^{3} dm^2 \\ \hline 8,4\cdot 10^{5} cm^2 \\ \hline 8,4\cdot 10^{7} mm^2 \\ \hline \frac{21}{25} a \\ \hline 0,0084 ha \\ \hline \end{array}$