Question

Adjacent side of a parallelogram differ by 5cm . If the perimeter is 90 cm ,find the length of sides of the parallelogram.

Answer 1

Let the first adjacent side be a

Second adjacent side = a +5


Perimeter = 90

2*Sum of adjacent sides = 90

=> Sum of adjacent sides = 45

=> a +a +5 = 45

=> 2a = 40

=> a = 20

First adjacent side = 20 cm

Second adjacent side = 25 cm

Answer 2

1 side be x and other be x-5

2 (x+x-5)=90


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