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31 December, 02:57

Tiles are being placed in front of a fireplace to create a trapezoidal hearth. The hearth will have a height of 24 inches and bases that are 48 and 60 inches. If the tiles cover 16 square inches, how many tiles will be needed?

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  1. 31 December, 05:22
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    Assume that the tiles can be cut

    remember that teh formula for a trapezoid is (base1+base2) times (1/2 height)

    height=24

    base1=48

    base2=60

    subsitute

    (48+60) times (1/2 24)

    108 times 12=1296

    now wee find out how many tiles

    16 is 1 tile

    find how many 16's in 1296

    1296/16=81

    ans: 81 tiles
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