SOLUTION: Assume the wall height in this home is 8ft If wallpaper costs $170.38 per roll. If one roll covers 20m², how much will it cost to put wallpaper in both Bedrooms 2 and 3? Assume 35

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Question 1087294: Assume the wall height in this home is 8ft
If wallpaper costs $170.38 per roll. If one roll covers 20m², how much will it cost to put wallpaper in both Bedrooms 2 and 3? Assume 35% of the walls are covered by windows and doors, and ignore the built-in cupboards (1 meter = 3.28ft)
(Bedrooms 2 is 8'×12'and Bedroom 3 is 8'×12')

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
So bedroom 2, the perimeter is,
P%5B2%5D=2%288%2B12%29=2%2820%29=40
So the surface area is (remember we subtract out 35% so we only need 65%)
A%5B2%5D=40%288%29%280.65%29
A%5B2%5D=208ft%5E2
Bedroom 3 is the same measurement as bedroom 2 so,
A%5B3%5D=208ft%5E2
So then the total area is,
A=416ft%5E2
We have to convert from ft^2 to m^2.
1+ft+=0.3048m
.
.
A=416%280.3048%2F1%29%5E2ft%5E2%28m%2Fft%29%5E2
A=38.648m%5E2
So then 2 rolls will cover that since that would be 40m%5E2.
The cost would then be,
C=2%28170.38%29
C=340.76
If you require the exact cost of the wallpaper (assuming you can use the rest somewhere else),
C=%2838.648%2F20%29170.38
C=329.24