peacarlainmb
peacarlainmb peacarlainmb
  • 11-01-2016
  • Mathematics
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The perimeter of a parallelogram is 54 inches If the length of one side is 18 inches what is the length of a side adjacent to it

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taskmasters
taskmasters taskmasters
  • 11-01-2016
Perimeter of the parallelogram = 54 inches
Length of one side of the parallelogram (a) = 18 inches
Let us assume the length of the adjacent side (b) = x inches 
Now we already know
Perimeter of a parallelogram = 2 (a + b)
54 = 2(18 + x)
54/2 = 18 + x
27 = 18 + x
x = 27 - 18
   = 9
So the length of a side adjacent to 18 inches side is 9 inches.
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