Răspuns:
[tex] a= 3 \sqrt{6} + 3 \sqrt{3} [/tex]
[tex]b = 2 \sqrt{6} + 4 \sqrt{3} [/tex]
[tex]mg = \sqrt{2 \sqrt{6} + 4 \sqrt{3 } \times 3 \sqrt{6} + 3 \sqrt{3} } \\ = \sqrt{6 \times 6 + 12 \times 3 } \\ = \sqrt{36 + 36} \\ = \sqrt{72 } \\ = 6 \sqrt{2} [/tex]
