Ответ:
p=F/S,
S=0,4м^2=0,08м
F=P=mg=60*10=600
p=600/0,08=7500Па
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Ответ:
p=F/S,
S=0,4м^2=0,08м
F=P=mg=60*10=600
p=600/0,08=7500Па