Răspuns :

[tex]mg = \sqrt{3 \sqrt{8} \times 4 \sqrt{18} } \\ mg = \sqrt{3 \times 2 \sqrt{2} \times 4 \times 3 \sqrt{2} } \\ mg = \sqrt{3 \times 2 \times 4 \times 3 } \\ mg = \sqrt{144} \\ mg = 12[/tex]