the perimeter of a parallelogram is 140cm . if one of the sides is longer than the other by 10 cm, find the length of each of its side
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perimeter of llgm is 140cm.
perimeter of llgm is 2(l+b).
Let length be m so breadth will be 10 cm more that is m+10
Now,
2(l+b)=140
2(m+m+10)=140
2(2m+10)=140
4m+20=140
4m=140-20
4m=120
m=120/4
m=30cm
m+10=30+10=40cm
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