Jawabanmu

2014-04-27T18:07:16+07:00
BC : AB = ED : AE 3 : 2 = ED : 8 ED = 3/2 × 8 = 12 cm BE : DC = AE : AD BE : 5 = 8 : (8+12) BE : 5 = 8 : 20 BE = 8/20 × 5 BE = 2 cm
2014-04-27T18:08:19+07:00
Rumus mencari ED

 \frac{a}{b}= \frac{c}{d}

 \frac{2}{3} = \frac{8}{d}

2d = 24
d  = 12

ED = 12 cm

rumus mencari EB

 \frac{a}{a+b}= \frac{e}{d}

 \frac{2}{5}= \frac{e}{5}

5e = 10
e   = 2

EB = 2 cm