SOLUTION: The perimeter of parallelogram ABCD is 54 and its altitude is 7. If the difference between the lengths of a pair of adjacent sides of the parallelogram is 9, find its area. How do

Question 856929: The perimeter of parallelogram ABCD is 54 and its altitude is 7. If the difference between the lengths of a pair of adjacent sides of the parallelogram is 9, find its area. How do I solve this?

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,



Question States*** b - a = 9   0r  b = 

P = 2b + 2a = 54  

0r   b +  a = 27

   (9+a) + a = 27

        2a = 18

         a = 9   and b = 18    A = 18*7 = 126 units^2 

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