Va rog e urgent! Ofer coroana!

Răspuns:
CD = 2/3 × BD => CD = 2/3 × 6 => CD = 4CM
BC = CD + DB = 4 + 6 = 10 cm
[tex]cd = \frac{2}{3} \times db \\ cd = \frac{2}{3} \times 6 \\ cd =4 [/tex]
BC=CD+DB
BC=4+6
BC=10cm