Since it is a rectangular window, we can find its area using the following formula:
Let's make a conversion first:
48in = 4ft
24in = 2ft
[tex]\begin{gathered} A=w\cdot l \\ \text{Where:} \\ w=\text{width}=4ft \\ l=\text{long}=2ft \\ A=4\cdot2=8ft^2 \end{gathered}[/tex]