Atrapezoid an area of 7.2 square miles. one base is 1.2 miles and the other is 2.4 miles long. what

Atrapezoid an area of 7.2 square miles. one base is 1.2 miles and the other is 2.4 miles long. what is the height

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  1. Formula for a trapezoid is:

    A = ((a + b) / 2) h

    A is area, a and b are the base sizes, h is height.

    Plug n' chug:

    7.2 = ((1.2 + 2.4) / 2) h

    Simplify:

    7.2 = 1.8h

    Divide both sides by 1.8 to get h alone

    4 = h

  2. Area = 7.2 square miles

    Base = 1.2

    Second base = 2.4

    Area of Trapezium = (1/2)*(Sum of Bases)*height

    7.2 =  (1/2)*(2.4 + 1.2)*h

    7.2 = (1/2)*3.6*h

    7.2 = 1.8h

    1.8h = 7.2

    h = 7.2/1.8 = 4

    Height = 4 miles.

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