# One side of the parallelogram is 12 cm, and the other is 4 cm shorter, find the perimeter of the parallelogram.

September 12, 2021 | education

| 1. Let’s calculate the length of the second side of the parallelogram if it is known that it is 4 centimeters shorter than its first side, and the length of the first side is 12 centimeters:

12 – 4 = 8.

2. The perimeter of a parallelogram can be calculated using the following formula:

P = 2 (a + b), where a and b are two sides of the parallelogram, and P is the perimeter.

3. Let us find what the perimeter of this parallelogram is equal to:

2 x (12 + 8) = 20 x 2 = 40 centimeters.

Answer: The perimeter of the parallelogram is 40 centimeters.