SOLUTION: how many rolls of wallpaper, each 7 yards long and 24 inches wide , will paper the side of a room 14 feet by 12.6 feet and 9 feet high, deducting 144 feet squared for doors and win

Algebra ->  Volume -> SOLUTION: how many rolls of wallpaper, each 7 yards long and 24 inches wide , will paper the side of a room 14 feet by 12.6 feet and 9 feet high, deducting 144 feet squared for doors and win      Log On


   

Question 1108682: how many rolls of wallpaper, each 7 yards long and 24 inches wide , will paper the side of a room 14 feet by 12.6 feet and 9 feet high, deducting 144 feet squared for doors and windows?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Each wallpaper roll measures:
+7%2A3+=+21+ ft long
+24%2F12+=+2+ ft wide
area = +2%2A21+=+42+
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The wording is confusing, but it sounds
like they want the area of all 4 walls
2 opposing walls:
+2%2A12.6%2A9+=+226.8+
The other 2 opposing walls:
+2%2A14%2A9+=+252+
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+226.8+%2B+252+=+478.8+
+478.8+-+144+=+334.8+
+334.8%2F42+=+7.97+
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8 rolls of wallpaper are needed
check the math & get another opinion if needed