Find the perimeter of the parallelogram if one side is 3.7 cm, and the other is 1.4 cm larger.

1. Find the length of the second side of the parallelogram. Based on the problem statement, to find the length of the second side of the parallelogram, add 1.4 cm to the first side:
3.7 cm + 1.4 cm = 5.1 cm.
2. Find the perimeter of the parallelogram. It is known that the opposite sides of a parallelogram are pairwise equal, then to find out its perimeter, you need to multiply one side by 2, and add the second side multiplied by 2 to it:
3.7 cm * 2 + 5.1 cm * 2 = 7.4 cm + 10.2 cm = 17.6 cm.
Answer: the perimeter of the parallelogram is 17.6 cm.