Se da:
Dreptunghi
l=9 m
L=[tex] \frac{5}{8} [/tex]
Rezolvare:
P=AB+BC+AC
P=[tex] (\frac{9}{1}+\frac{9}{1})+( \frac{9}{3} +\frac{9}{3})= \frac{18}{1}+ \frac{54}{9}= \frac{216}{9} [/tex] simplifivam prin 3 =[tex] \frac{71}{3} [/tex]
Solutie:P= [tex] \frac{71}{3} [/tex]
