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b=base
2a+2b=108
a+b=54..........(1)
a=(1÷5)b..........(2)
(2)en(1)
a+b=54
(1÷5)b+b=54
(b+5b)/5=54
6b=5×54
b=5×54÷6
b=45
a=(1÷5)b
a=(1÷5)45
a=9
area =a×b=45×9=405 m.m
b = 5a
108 = 2a+2*5a
108 = 2a+10a = 12a
108/12 = a
a = 9
b = 5a
b = 5*9 = 45
Area = 45*9 = 405
Respuesta:
405 m²