2. Rohan plans to place windows on each short wall measuring 4 ft. by 3 ft. What is the area of insulation needed for each of those walls?

In order to calculate the area needed for each wall, let's calculate the area of the window, multiplying its length and width:
[tex]\begin{gathered} A=L\cdot W\\ \\ A=4\cdot3\\ \\ A=12\text{ ft^^b2} \end{gathered}[/tex]Therefore the area of insulation needed for each wall is 12 ft².