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Math

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The area of trapezoid is h( b1+b2)/5,
where h is the altitude, and b1 and b2 are the lenghts of the parallel bases. If trapezoid has an altitude of 5 inches, an area of 55 square inches , and one base 12 inches long, what is the lenghth, in inches, of its other base?

Please for some sugesstions.

  • Math -

    A=h( b1+b2)/2,
    h=5
    b=12
    A=55
    =>
    55=5(12+b2)/2

    Solve for b2.

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