Question

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!!!!!!!

Answer 1

.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

Answer 2

Answer: $0.72

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)\\\\=(77112)/(107100)=(72)/(100)=\$0.72`

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