Jawabanmu

2014-02-17T21:37:21+07:00
L = 1/2 t (a + b) 50 = 1/2 5 (a + b) 50 = 2,5 (a + b) a + b = 50 : 2,5 a + b = 20 perbandingannya 2 : 3 2:3 = 20 5 = 20 20/5 4 a=2 x 4 = 8 b= 3 x 4 = 12