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4 October, 15:08

an 8 by 19 ft wall has three 4 by 5 ft windows. the area of the three windows is what percent of the area of the entire wall (including the windows) ?

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  1. 4 October, 17:46
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    39.5% (3 sf)

    Step-by-step explanation:

    Area of 1 window: 4*5 = 20 ft²

    2 windows: 3*20 = 60ft²

    Area of the wall: 8*19 = 152 ft³

    Percentage of window area:

    60/152 * 100 = 39.47368421%

    = 39.5% (3 sf)
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