Odpowiedzi

2009-12-10T15:45:00+01:00
2009-12-10T15:46:58+01:00
Pc = 6a²
726 = 6a²
a²= 726 : 6
a²= 121
a= 11cm
2 4 2
2009-12-10T15:47:18+01:00