Question 856929
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Hi,
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Question States*** b - a = 9   0r  b = {{{9+a)}}}
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