perimeter of parallelogram 140 cm if one side is longer than the other by 10cm, find the length of each of its parallel side

The length of each of its parallel side are 30 cm and 40 cm.

Step-by-step explanation:

Perimeter of parallelogram = 140 cm. The one side of parallelogram = x cm. The other side of parallelogram = x+10 cm.

Perimeter of a parallelogram = 2 (base+height)

⇒ 140 = 2 (x+x+10)

⇒ 140 = 2 (2x+10)

⇒ 140 = 4x+20

⇒ 4x = 120

⇒ x = 120/4

x = 30 cm

∴ The longer side = 30+10 = 40 cm