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MakcuM [25]
3 years ago
9

Wallpaper was applied to one rectangular wall of a large room. The dimensions of the wall is 42 feet on one side and the other s

ide 25.5 feet. If the total cost of the wallpaper was $771.12, what was the cost, in dollars, of the wallpaper per square foot?
PLZ HELP ASAP!!!!!!!
Mathematics
2 answers:
Svetradugi [14.3K]3 years ago
6 0
.72¢ per square foot. 
In order to find this answer, first you need to find out how many square feet the wall is. Multiply the dimensions ( 42 x2 5.5), and that would give you the answer. (1,071). Now that we have the total square footage, you can cross multiply to find out how much 1 square foot would cost.    1,071       1
                                                                                          –––––– x ––––
                                                                                           771.12.      ?
Cross multiply to get the answer .72
tatiyna3 years ago
4 0

Answer: $0.72


Step-by-step explanation:

Given The dimensions of the rectangular wall of a large room.

Length of the rectangular wall= 42 feet

Width of the rectangular wall= 25.5 feet

Then the area of the rectangular wall =length\times\ width

=42\times25.5=1071\ square feet

The cost of the wallpaper = $771.12

The cost of the wallpaper per square foot=\frac{\text{total cost of wallpaper}}{\text{area of the wall}}

=\frac{771.12}{1071}\\\\=\frac{77112}{107100}=\frac{72}{100}=\$0.72

Hence, the cost of the wallpaper per square foot = $0.72

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