Odpowiedzi

2010-03-15T15:54:50+01:00
|A1B1| = 9 × 2 1/3 = 9 × 7/3 = 3 × 7 = 21 (dm)
|B1C1| = 12 × 2 1/3 = 12 × 7/3 = 4 × 7 = 28 (dm)
|C1A1| = 15 × 2 1/3 = 15 × 7/3 = 5 × 7 = 35 (dm)
7 4 7