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Find the length of one base of a trapezoid if the area is 126 inches squared, the height is 7 inches and the length of the other base is 15 inches.

  • algebra -

    Just plug in what you know:

    If the two bases are a and b, and the height is h,

    area = h(a+b)/2

    126 = 7(a+15)/2

    I trust you can figure out a's value from here.

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