We have the following:
The standard window:
[tex]\begin{gathered} A=2\cdot4 \\ A=8 \end{gathered}[/tex]
The small window:
[tex]\begin{gathered} A=\frac{1}{2}\cdot2\cdot\frac{1}{2}\cdot4 \\ A=2 \end{gathered}[/tex]
The large window:
[tex]\begin{gathered} A=4\cdot2\cdot4\cdot4 \\ A=128 \end{gathered}[/tex]
Therefore:
The standard window is 8 square feet
The small window is 2 square feet
The large window is 128 square feet
