I need help finding the numbers on each side so I can multiply

Given the following question:
[tex]\begin{gathered} (a+b+c)\times h \\ h=16 \\ 9+9+9=27 \\ 27\times16=432\operatorname{cm}^2 \end{gathered}[/tex][tex]\begin{gathered} 9\times16+9\times16+9\times16 \\ 144+144+144=432 \end{gathered}[/tex]432cm^2