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V=4*3=64cm*3
ro=m/V
ro=2000/64
ro=31,25 g/cm*3
m = 2kg
V = 4cm do 3 = 64cm3(sześcienne) = 0,000064m3
Szukane:
d = ?
d = m/v
d = 2kg/0,000064m3 = 31250kg/m3
Gęstość wynosi 31250kg/m3.