Q. 74.5( 23 Votes )

The perimeter of a parallelogram is 140 cm. If one of the sides is longer than the other by 10 cm, find the length of each of its sides.

Answer :

Let x be the common multiple.


According to question, sides will be x and (x + 10).


Perimeter =


140 = 2 (x + (x + 10))


140 = 2 (2x + 10)


140 = 4x + 20


4x = 120


X =30 cm


X + 10 = 40 cm


So, sides will be 30 cm and 40 cm.


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