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13 August, 22:44

A floor of a room is in the shape of square. It is to be covered with rectangular tiles that each have an area of 192 square inches. If the length of the floor is 14 feet, how many tiles are needed to cover the floor?

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  1. 13 August, 23:21
    0
    Find area of room

    aera=legnth wtimes width

    in a square, legnth=width

    aera=legnth^2

    legnth=14 feet

    convert o inches

    14*12=168 inches

    area=168^2=28224 square inches

    how many tiles will cover all of floor?

    aka

    how many 192 in^2 is at least 28224 (at least, because we need to cover the whole floor without gaps)

    192x>28224

    divide both sides by 192

    x>147

    147 is the number of tiles we need
  2. 14 August, 00:43
    0
    The answer is 147 first convert 14 ft. into inches 14*12=168 168*168=28225 28225:192=147
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