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 ${\displaystyle 34{,}47}$ Sekunden. ? Stunden? ${\displaystyle 34{,}47:60:60=0{,}009575\approx 0{,}010\ }$Stunden 5 Meile sind (ca.) 9 km. Wie viele km sind 0.37 Meile? ${\displaystyle {\begin{matrix}9\ {\text{km}}\\{}\\x\end{matrix}}\quad {\begin{matrix}\cdots \cdots \\\searrow \cdot \\\cdots \cdots \end{matrix}}\quad {\begin{matrix}5\ {\text{Meile}}\\:\uparrow \\0{,}37\ {\text{Meile}}\end{matrix}}\quad x=0{,}666\ {\text{km}}}$
 ${\displaystyle 360^{\circ }=2\pi \ {\text{rad}}}$ ${\displaystyle 60^{\circ }\ {\text{?}}}$ ${\displaystyle {\begin{matrix}2\pi \ {\text{rad}}\\{}\\x\end{matrix}}\quad {\begin{matrix}\cdots \cdots \\\searrow \cdot \\\cdots \cdots \end{matrix}}\quad {\begin{matrix}360^{\circ }\\:\uparrow \\60^{\circ }\end{matrix}}\quad x=\textstyle {\frac {\pi }{3}}\ {\text{rad}}}$ ${\displaystyle 0{,}7\ {\text{Rad}}\ {\text{?}}}$ ${\displaystyle {\begin{matrix}360^{\circ }\\{}\\x\end{matrix}}\quad {\begin{matrix}\cdots \cdots \\\searrow \cdot \\\cdots \cdots \end{matrix}}\quad {\begin{matrix}2\pi \ {\text{rad}}\\:\uparrow \\0{,}7\ \ {\text{rad}}\end{matrix}}\quad x=\left({\tfrac {126}{\pi }}\right)^{\circ }\approx 40{,}1^{\circ }}$ ${\displaystyle 3\pi ^{\circ }\ {\text{?}}}$ ${\displaystyle {\begin{matrix}2\pi \ {\text{rad}}\\{}\\x\end{matrix}}\quad {\begin{matrix}\cdots \cdots \\\searrow \cdot \\\cdots \cdots \end{matrix}}\quad {\begin{matrix}360^{\circ }\\:\uparrow \\3\pi ^{\circ }\end{matrix}}\quad x=\textstyle {\frac {6\pi ^{2}}{360}}\approx 0{,}1645{\text{rad}}}$