Jawabanmu

2014-04-14T23:19:35+07:00
80/120 = 24/X
120 x 24 = 80 X
2880/80 = X
36 cm = X

Semoga membantu :D
2014-04-14T23:22:16+07:00
BC/BOC = AB/AOB
24/80 = AB/120
(24) (120) = (80) (AB)
2880 = 80 AB
AB = 2880/ 80
AB = 36 cm