Răspuns :
Semiperimetrul = 26 m:2=13 m ⇒ L+l=13 m
L=l+1 ⇒l+1+l=13 2l+1=13 /-1
2l=12 /:2
l=6 m
L=6+1
L=7 m R. 6 m si 7 m
L=l+1 ⇒l+1+l=13 2l+1=13 /-1
2l=12 /:2
l=6 m
L=6+1
L=7 m R. 6 m si 7 m
P = 2*(x + x+1)
↓↓
26 = 2 * (2x+1)
↓
13 = 2x+1
2x = 12
x = 6 ⇒ l = 6 si L = 7
Yerificare: P=2*(7+6)=2*13=26 (A)
↓↓
26 = 2 * (2x+1)
↓
13 = 2x+1
2x = 12
x = 6 ⇒ l = 6 si L = 7
Yerificare: P=2*(7+6)=2*13=26 (A)