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v = m:ρ
m = 1,2 kg
ρ = 790 kg/m3
v = 1,2kg : 790 kg/m3 = 3/1975 m3
1,2kg = 1200g
v = m / d
v = 1200 / 0,79 ≈ 1519cm³
m = 1,2 kg
d = 790 kg/m³
Szukane:
V = ?
Wzór:
d = m/v
Rozwiązanie:
d = m/V
V = m/d
V = 1,2/790 = 0,0015 m³ = ~1,5dm³