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17 August, 08:03

Mr. Williams is building a sand box for his children. It cost $228 for the sand if he builds a regular-sandbox with dimensions 9' x 6'. How much will the same cost if he decides to increase the size to 13 1/2' x 9'?

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  1. 17 August, 08:21
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    It will cost $512.73

    Step-by-step explanation:

    9 in by 6 in sandbox cost $228

    i. e., 9*6 = 54 in²

    54 in² cost $228

    1 in² will cost $228/54

    ≈ $4.22

    If the new dimension is 13 1/2 in by 9 in

    then area will be 13 1/2*9

    27*9/2 = 121.5 in²

    The cost of 121.5 in² will be

    121.5*4.22 = $512.73
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