Answer: Let's denote the length of the other piece as "x" feet.
According to the information given, the total length of the pipe is cut into two pieces: one piece is 13 feet long and the other piece is "x" feet long. The total length of the pipe remains the same after cutting.
Total length of the pipe = Length of the first piece + Length of the second piece
45 pounds = 18 pounds (first piece) + x pounds (second piece)
We know that the sum of the weights of the two pieces is equal to the weight of the original pipe:
18 + x = 45
Now, solve for "x":
x = 45 - 18
x = 27
So, the length of the other piece is 27 feet.