Ответ:
a=4
b=a+2,4=6,4
c=b-3,4=3
S=2ac+2bc=2c(a+b)=62,4=624000/1600=390
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Ответ:
a=4
b=a+2,4=6,4
c=b-3,4=3
S=2ac+2bc=2c(a+b)=62,4=624000/1600=390