Odpowiedzi

2009-11-26T18:58:47+01:00
P = 200 cm^2
P = P1 + P2
P1 = 3 * P2

P = 3*P2 + P2
P = 4*P2
200 = 4*P2
P2 = 50 cm^2
P1 = 3 * P2 = 3 * 50 = 150 cm^2