Question

Un cub cu masa m=9,6 g si densitatea=1,2g/cm cubi are lungimea laturii...?
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Answer 1

$m=9,6 \ g \\ \rho=1,2 \ g/cm^3 \\ \boxed{l-?} \\ \bold{Rezovare:} \\ \boxed{\rho=\frac{m}{V}} \\ V=l^3 \ \ \ \Rightarrow l= \sqrt[3]{V} \\ V=\frac{m}{\rho} \\ V=\frac{9,6 \ g}{1,2 \ g/cm^3} \\ V=8 \ cm^3 \\ l= \sqrt[3]{8} \ cm \\ \Rightarrow \boxed{l=2 \ cm}}$