I need to solve for each part the part above the red line and the part under the red line please help QUICK

So upper most rectangle area is given as,
[tex]\begin{gathered} \text{A}_1=\text{ length}\times breadth\text{ } \\ \text{A}_1=\text{ 8}\times2 \\ \text{A}_1=16\text{ sq.ft.} \\ A_2=\text{ (8-3)}\times6 \\ \text{A}_2=5\times6 \\ \text{A}_2=30\text{ sq.ft.} \end{gathered}[/tex]