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11 June, 15:13

the width of a rectangle is 20 inches what must the length be if the perimeter is at least 180 inches

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  1. 11 June, 17:48
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    The perimeter is the sum of the 4 sides.

    The width is 20, so the 2 widths would be 20+20 = 40

    Subtract that from the given perimeter:

    180 - 40 = 140

    Divide that by 2 for the two lengths:

    140/2 = 70

    The length needs to be at least 70 inches.
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