Answer:
The width of the foil = w = 2.5 inches
Explanation:
We know that the Area of a rectangular piece:
![A=wl](https://img.qammunity.org/2021/formulas/mathematics/high-school/nqdyii80iqhqx0jbjmtb3k26bf6wo88x3y.png)
Here:
Given that area of the rectangular piece of foil:
Area = A = 11 1/4 square inches
= 45/4 square inches
= 11.25 square inches
Length = l = 4 1/2 inches
= 9/2 inches
= 4.5 inches
Using the Area formula
![A=wl](https://img.qammunity.org/2021/formulas/mathematics/high-school/nqdyii80iqhqx0jbjmtb3k26bf6wo88x3y.png)
![w\:=\:(A)/(l)](https://img.qammunity.org/2021/formulas/mathematics/high-school/3px8n4wnaedmzb7rtm0j5pm9l6479jj0hk.png)
![=(11.25)/(4.5)](https://img.qammunity.org/2021/formulas/mathematics/high-school/3pbgpytewx3yal07ycyy2cb5ek3wfa93os.png)
inches
Thus, the width of the foil = w = 2.5 inches