Răspuns :

Răspuns:

Lungimea : G

Latimea : L

Perimetrul : P

Aria = G × L

P = 2G + 2L

L = 2/3G

60 = 2G + 2(2/3G)

60 = 2G + 4/3G

60 = 6/3G + 4/3G

60 = 10/3G

G = 18

L = 2/3 × 18

L = 2 × 6

L = 12

Aria = G × L

Aria = 18 × 12

Aria = 216 cm²