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17 July, 13:14

The area of a trapezoid is 180⁢cm2. The height is 18⁢cm and the length of one of the parallel sides is 5⁢cm. Find the length of the second parallel side. Express your answer as a simplified fraction or a decimal rounded to two places

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  1. 17 July, 14:09
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    The formula for area of a trapezoid is (b1+b2) / 2*h

    (5+x) / 2*18 = 180

    Divide bith sides by 18

    (5+x) / 2=10

    Multiply both sides by 2

    5+x=20

    Subtract 5 from both sides

    x=15

    Final answer: 15 cm
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