Răspuns :
Aromb = diagonala 1 ori diagonala 2 supra 2
A = [tex] \frac{30 ori 4}{2} [/tex]
A= [tex] \frac{120}{2} [/tex]
A = 60
A = [tex] \frac{30 ori 4}{2} [/tex]
A= [tex] \frac{120}{2} [/tex]
A = 60