[tex]diagonala \: in \: patrat = latura \sqrt{2} [/tex]
[tex]diamtrul = 6 \sqrt{2} [/tex]
[tex]raza = 3 \sqrt{2} [/tex]
[tex]lumgime = 2 \times \pi \times raza| [/tex]
[tex] = > lungime = 6 \sqrt{2 } \times \pi[/tex]
[tex]aria = \pi \times (raza)^{2} [/tex]
[tex] = > aria = 18 \times \pi[/tex]