V=5,1*4,12*2,5=52,53 м³
m=V*ρ=52,53*1,29≈67,77 кг
P=mg=67,77*10=677.7 Н
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V=5,1*4,12*2,5=52,53 м³
m=V*ρ=52,53*1,29≈67,77 кг
P=mg=67,77*10=677.7 Н