TeX Quellcode:

\begin{array}{rclcc} h^2 &=& p \cdot q & \vert & \sqrt{} \cr h &=& \sqrt{p \cdot q} \cr &\approx& \sqrt{21{,}33 \cdot 1{,}2} \cr &\approx& \sqrt{25{,}60} \cr & \approx & 5{,}06 \, cm \end{array}