Cześć!
Zadanie 1
[tex]V=5 \ dm^3=0,005 \ m^3 \ (bo \ 1 \ m^3=(10 \ dm)^3=1000 \ dm^3)\\\\d=1350 \ \frac{kg}{m^3}\\\\m=V\cdot d=0,005 \ m^3\cdot1350 \ \frac{kg}{m^3}=\boxed{6,75 \ kg}[/tex]
Zadanie 2
[tex]d=1,2 \ \frac{g}{cm^3}\\\\m=24 \ dag=240 \ g \ (bo \ 1 \ dag=10 \ g)\\\\V=\frac{m}{d}=\frac{240 \ g}{1,2 \ \frac{g}{cm^3}}=\boxed{200 \ cm^3}[/tex]
