a certain polygon has 9 sides. Two of the sides have length of a, and 4 sides each have length 3a. The lengths of the remaining three sides are 11,12, and 13. If the perimeter of the polygon is 92, what is the value of a?
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Home » Mathematics » a certain polygon has 9 sides. Two of the sides have length of a, and 4 sides each have length 3a. The lengths of the remaining three sides are 11,12, and 13. If the perimeter of the polygon is 92, what is the value of a?