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  • 15-09-2018
  • Mathematics
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can someone help me

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Аноним Аноним
  • 15-09-2018

3x + 4x +5x = 54   (because the perimeter = sum of its dies)

12x = 54

x = 4.5

So the 3 sides are 3*4.5 , 4*4.5 and 5*4.5

= 13.5, 18 and 22.5  units (answer)

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