Find the side of the parallelogram if the length of the adjacent side is 41 cm and the perimeter

Find the side of the parallelogram if the length of the adjacent side is 41 cm and the perimeter of the parallelogram is 100 cm.

1. The sum of its sides is called the perimeter of a parallelogram.

Since the opposite sides of a parallelogram are equal, you can find the sum of the lengths of the sides, the length of which is known.

41 + 41 = 82 (cm) the sum of the known sides of the parallelogram.

2. Find the sum of the sides whose length is unknown, for this we subtract the sum of the known sides from the perimeter.

100 – 82 = 18 (cm)

3. Find the unknown side of the parallelogram by dividing the sum of the unknown sides by 2, since the opposite sides are equal.

18/2 = 9 (cm) the desired side.

Answer: 9 cm