TeX Quellcode:

\begin{array}{rclcc} h^2+p^2 &=& a^2 & \vert & \sqrt{} \cr a &=& \sqrt{h^2+p^2} \cr &=& \sqrt{5^2+5^2} \cr &=& \sqrt{50} \cr & \approx & 7{,}07 \, cm \end{array}