Perimetrul : P
Lungime : G
Latime : E
P = 50
[tex]g - e = \frac{p}{10} [/tex]
[tex]g - e = \frac{50}{10} [/tex]
G - E = 5 => G = 5 + E
P = 2(G + E)
50 = 2G + 2E
50 = 2(5 + E) + 2E
50 = 10 + 2E + 2E
50 = 10 + 4E
50 - 10 = 4E
40 = 4E
E = 10
G = 5 + 10
G = 15