Jawabanmu

2014-05-01T12:40:39+07:00
BE/CD = AB/AC
6/CD = 8/16
8.CD = 6 . 16
8CD = 96
CD = 96/8
CD = 12 cm

jadi jawabannya d. 12 cm
saya pakai phytagoras
AE=10
ED=10
BE=6
CD=12
AB=8
BC=8