[tex]\it Not\breve am\ \ell - latura\ p\breve atratului.\\ \\ \ell=2R=2\cdot4=8cm\\ \\ \mathcal{P}=4\cdot\ell=4\cdot8=32\ cm\\ \\ \mathcal{A}=\ell^2=8^2=64\ cm^2\\ \\ \\ \mathcal{C}(O,4)\ reprezint\breve a\ un\ cerc\ cu\ centrul\ O,\ de\ raz\breve a\ 4\ cm.[/tex]
