Răspuns :
In triunghiul AOB aplicam Pitagora si avem AB^2=AO^2+OB^2=100+36=136
AB=[tex] \sqrt{136} =2 \sqrt{34} P=4*2\sqrt{34}=8\sqrt{34}cm[/tex]
AB=[tex] \sqrt{136} =2 \sqrt{34} P=4*2\sqrt{34}=8\sqrt{34}cm[/tex]