Answer:
The width is 5 inches
Step-by-step explanation:
In order to find the width, start by labeling the width as x. Since we know the length is 8 inches longer, we can express the length as x + 8. Now we can plug these two into the perimeter formula and solve for x to get the width.
2l + 2w = P
2(x + 8) + 2x = P
2x + 16 + 2x = P
4x + 16 = P
4x + 16 = 36
4x = 20
x = 5
