TeX Quellcode:

\begin{array}{rcl} A_G &=& A_1+A_2+A_3 \cr A_G &=& 24 \, m^2+16{,}5 \, m^2+3{,}25 \, m^2 \cr A_G &=& 43{,}75 \,m^2 \end{array}