Jawabanmu

2014-04-18T18:28:14+07:00
Sisi AC = b = 3/(5+3+7) x 120 = 3/15 x 120 = 24 cm
2014-04-18T18:29:59+07:00
K = a+b+c 120= 5x+3x+7x 120=15x 120/15 =x 8 =x AC=b AC = 3x AC=8.3 AC=24