One side of the parallelogram is 12 dm and the other is 11 dm shorter, find the perimeter of the parallelogram.

A parallelogram is a geometric figure in which opposite sides are equal and parallel. The sum of all the angles of a parallelogram is 360 degrees. The perimeter of a parallelogram is equal to the sum of the lengths of all its sides, or the sum of the length and width of the parallelogram multiplied by two. To answer the question of the problem, you need to know the length of the other side of the parallelogram.

1) Determine the size of the other side of the parallelogram.

12 – 11 = 1 dm.

2) Find the perimeter of the parallelogram.

(12 + 1) * 2 = 13 * 2 = 26 dm.

Answer: The perimeter of the parallelogram is 26 decimeters.