Jawabanmu

2014-08-24T18:31:13+07:00
Sdut c = sudut f
sudut a = sudut d
sudut b = sudut e

b. ab :
18. x
---- = ----
9. 4

18.4 = 9×

72 = 9x
x = 8


df :
8. 14
--- = ---
4. x

14.4 = 8x
56 = 8x
x= 7