Answer :

Opposite sides of parallelogram are equal and parallel

So

  • 3x-5=x+7
  • 2x=12
  • x=6

And

  • 2y-7=y+7
  • y=7+7
  • y=14

Now

AB:-

  • 3(6)-5=18-5=13

AD:-

  • 14+3=17

Perimeter:-

  • 17+17+13+13
  • 34+26
  • 60cm

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