Ответ:
S=a*b
S=7,85*7,85=61,6225м^2
Р=2(а+b)
P=2(7,85+7,85)=31,4м
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Ответ:
S=a*b
S=7,85*7,85=61,6225м^2
Р=2(а+b)
P=2(7,85+7,85)=31,4м