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5 November, 02:48

A floor of a room is in the shape of a rectangle. It is to be covered with square tiles. The area of each square tile is 100 square inches.

If the length of the floor is 20 feet and the width is 10 feet, how many square tiles are needed to cover the floor?

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  1. 5 November, 06:46
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    We know the area of each tile

    we need to find the area of the room so we can find how many tiles are needed

    area=legnth times width

    legnth=20

    widht=10

    notice that the area of the tiles is in inches and the area of the room is in feet so convert to inches

    1 foot=12 inches

    20 feet=12 times 20 inches=240 inches

    10 feet=12 times 10=120 inches

    legnth=240 inches

    widht=120 inches

    area=240 times 120

    area=28800

    how many 100 in^2 tiles will make 28800 in^2

    how many tiles times 100 in^2=28800 in^2

    divide both sides by 100in^2

    how many tiles=288

    answer is 288 tiles needed
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