A triangle has two equal sides. The third side has a length of 13 feet, 2 inches. If the perimeter of the triangle is 40 feet, what is the length of one of the equal sides?

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The perimeter, 40 feet, is the sum of the lengths of all three sides. The sum of the lengths of the two equal sides is the difference between the perimeter and the length of the third side. Sum of lengths of 2 equal sides = 40 feet- 13 feet, 2 inches = 39 feet, 12 inches - 13 feet, 2 inches = 26feet, 10 inches The length of one side is obtained by dividing the sum by2.Length of one equal side 26 feet, 10 inches / 2 = 13 feet, 5 inches

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