Răspuns:
Raza=
[tex]3 \sqrt{6} [/tex]
--> diagonala =2R=
[tex]6 \sqrt{6} [/tex]
[tex]d = l \sqrt{2 } \: \\ 6 \sqrt{6} = l \sqrt{2} \: \\ - > l = \frac{6 \sqrt{6} }{ \sqrt{2} } = \frac{6 \sqrt{12} }{2} = \: \\ \frac{12 \sqrt{3} }{2} = 6 \sqrt{3} [/tex]
[tex]ap = \frac{l}{2} = \frac{6 \sqrt{3} }{2} = 3 \sqrt{3} [/tex]
[tex]aria = l^{2} = (6 \sqrt{3} )^{2} = 108[/tex]
