Question 960317: Boris wants to wallpaper the four walls of his living room. wallpaper is always hung vertically! his room is 12' by 18' and the ceiling is 10' high. if the wallpaper he wants comes in rolls that are 2.5' wide and 50' long, how many rolls does Boris need to buy? if Boris has any waste, he cant reuse it and must throw it away. Draw a diagram to show the area being wallpapered and show how you figured it out.
Answer by macston(5194)   (Show Source):
You can put this solution on YOUR website! Wallpaper can turn corners, so consider the entire room is one long wall the length of the perimeter.
P=2(L+W)=2(18'+12')=2(30')=60'
Treat the room as one wall 60 feet long and 10 feet tall. Each 50 foot roll will provide 5 - 10 ft pieces. Since each piece is 2.5 feet wide, we need :
60 feet/2.5 feet per piece=24 pieces
24 pieces/5 pieces per roll= 5 rolls with 1 piece left over
ANSWER:: Boris will need 5 rolls.
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