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Yes, the three given lengths will form a triangle.

Three lengths can make a triangle if, and only if, the sum of the two shorter lengths is greater than the longest length.

The two shorter lengths are 56 ft and 16 ft with a sum of 56 ft + 16 ft = 72 ft

72 ft is greater than 65 ft so 56 ft, 65 ft and 16 ft will make a triangle.

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Q: Is 56 ft 65 ft 16 ft a triangle?
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