Final answer:
To find out how much longer the third and fourth pieces are when put together compared to the first and second pieces combined, we need to add the lengths of the first and second pieces and compare it to the total length of the third and fourth pieces.
Step-by-step explanation:
To find out how much longer the third and fourth pieces are when put together compared to the first and second pieces combined, we need to add the lengths of the first and second pieces, and then compare it to the total length of the third and fourth pieces.
The first piece is 0.75 meters and the second piece is 2.278 meters, so the total length of the first and second pieces combined is 0.75 + 2.278 = 3.028 meters.
The total length of the third and fourth pieces is 6.72 meters.
To find out how much longer the third and fourth pieces are, we subtract the total length of the first and second pieces from the total length of the third and fourth pieces: 6.72 - 3.028 = 3.692 meters.
Therefore, the third and fourth pieces are 3.692 meters longer than the first and second pieces combined.