Verified answer

Answer:

Step-by-step explanation:

I will assume that the ratio given in the question is since only covers two pieces.

We can think of this problem this way:

The thread has a length of 2 parts of 126. The thread has a length of 3 parts of 126. The thread has 4 parts of 126.

We can find the total number of parts by adding them.

We can now find the exact length of 1 part of the thread by dividing.

Now, we multiply the quotient to each thread.

Among the three pieces, the length of the longest thread is .

Hope this helps!

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