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m= 31,2 g
d=?
d=m/V
d= 31,2/ 4
d=7,8 g/cm3
V=4cm/3
m=31.2g
Szukane:
d=x
d=m:v
d=31.2g:4cm/3=7,87g/cm/szescienny/
odp: d=7,87g/cm szescienny.
d=31,2g:4cm(sześcienne)=7,8g/cm(sześcienny)