So firstly, square root 9a^2 and 49:
Next, combine like terms, and your answer will be , or the third option.
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Answer:
<h2>52 ft.</h2>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:
; having L as the larger side.
Hence, the strip of wallpaper needs to be as least 52 ft.