$ \text{Gegeben:}\\\text{Radius} \qquad r \qquad [m] \\ \\ \text{Gesucht:} \\\text{Durchmesser} \qquad d \qquad [m] \\ \\ d= 2\cdot r\\ \textbf{Gegeben:} \\ r=1\frac{1}{3}m \qquad \\ \\ \textbf{Rechnung:} \\ d= 2\cdot r \\ r=1\frac{1}{3}m\\ d= 2\cdot 1\frac{1}{3}m\\\\d=2\frac{2}{3}m \\\\\\ \small \begin{array}{|l|} \hline r=\\ \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} \small \begin{array}{|l|} \hline d=\\ \hline 2\frac{2}{3} m \\ \hline 26\frac{2}{3} dm \\ \hline 266\frac{2}{3} cm \\ \hline 2666\frac{2}{3} mm \\ \hline 2666666\frac{2}{3} \mu m \\ \hline \end{array}$