MATHEMATICS MIDDLE SCHOOL

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 side 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!!!!!!!

Answers

Answer 1

Answer:

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 = $length*\ width$

$=42*25.5=1071\ square feet$

The cost of the wallpaper = $771.12

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

$=(771.12)/(1071)\n\n=(77112)/(107100)=(72)/(100)=\$0.72$

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

Answer 2

Answer: .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

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