Answer:
Step-by-step explanation:
In this case, we need to calculate a perimeter, which is the sum of all sides of the rectangle.
So, rectangles has opposite sides equal, therefore, the perimeter should be:
[tex]P=2 (L+l)[/tex]; having L as the larger side.
[tex]P=2(14+12)\\P=2(26)\\P=52[/tex]
Hence, the strip of wallpaper needs to be as least 52 ft.