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28-06-2016
Mathematics

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Three sides of a quadrilateral measure 4.2 inches, 8 inches, and 5.8 inches. If the perimeter of the quadrilateral is 21.5 inches, what is the length of the fourth side

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rose121002 rose121002

28-06-2016

4.2+5.8 =10
10+8=18
21.5 - 18 = 3.5 inches

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