Question 1048154
As you divide the 10ft into different lengths, remember the Triangle Inequality Theorem which states that any side of any triangle is always shorter than the sum of the other two sides. 
Therefore, you cannot do 5, 3, 2 because 3+2 = 5 but the sum has to be greater than 5. However, you can do 4.5, 3, 2.5 so I just gave you one.
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John