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11 January, 23:03

A room is to be wallpapered including the ceiling and floor. The room is 18 feet long by 10 feet wide by 7 feet high. If a roll of wallpaper covers 40 ft. How many rolls must know buy

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  1. 12 January, 02:18
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    Answer: 31.5 rolls

    Step-by-step explanation:

    A room is to be wallpapered including the ceiling and floor and the room is 18 feet long by 10 feet wide by 7 feet high. The total area covered by the room will be: length * width * height

    = 18 * 10 * 7

    = 1260 feet

    A roll of wallpaper covers 40 ft. The number of rolls to buy will be:

    = 1260 : 40

    = 31.5 rolls
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