Question: (b) The diagram below shows a triangle in which the largest angle in the triangle is 120 and the length of the longest side

(b) The diagram below shows a triangle in which the largest angle

(b) The diagram below shows a triangle in which the largest angle in the triangle is 120 and the length of the longest side is 31. The lengths of the sides of the triangle are consecutive terms of an arithmetic sequence. 31 120 Find the perimeter of the triangle in terms of l.

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