The perimeter of a parallelogram is 210 cm . One of its side us 7 cm more than its shorter side. Find both the side of the parallelogram .
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perimeter of paralellogram = 2(l+b)
let shorter side = x
then longer side = x+7
perimeter = 210cm
=> 2(x+x+7) = 210cm
=> 2(2x+7) = 210
=> 2x+7=210/2
=>2x+7=105
=>2x=105-7
=>2x=108
=>x=108/2
=>x=54cm
hence one side is 54cm and other = 54+7 = 61cm
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