Answer: Shortest piece = 16 in.
Middle piece = 18 in.
Longest pice = 36 in.
Explanation:
Let x be the length of the shortest piece.
as per given, length of the middle piece = x+2
Length of the longest piece=2(x+2)
Total length = 70 in.
i.e.


Shortest piece = 16 in.
Middle piece = 18 in.
Longest pice = 2(18) in.
= 36 in.