Answer:
Shorter piece : 1
Medium piece: 3
Longest piece: 7
Explanation:
11 = a + b + c
a =longest
b = medium
c = shortest
a = 6ft + c
b = 3 × c
* put that all into the equation
11= (6+c) + (3×c) + c
11 = 6 + c + 3c + c
5 = 5c
c = 1
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