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Dari sini, terlihat bahwa CD : FG = 1 : 2
Karena EG = AB = BC = CE = 16 cm,
FG = EG - EF = 16 - 6 = 10 cm
Karena CD : FG = 1 : 2,
CD : 10 = 1 : 2
2 × CD = 10 × 1
CD = 10/2 = 5 cm
Karena BC = 16 cm,
BD = BC - CD = 16 - 5 = 11 cm
Jadi, panjang BD adalah 11 cm.
Semoga membantu :)