Jawabanmu

2014-06-14T08:25:39+07:00
Luas permukaan balok = 2(pl + pt + lt)
= 2(9.4 + 9.3 + 4.3)
= 2(36 + 27 + 12)
= 2(75)
= 150 cm^2
maaf ya kalo salah
2014-06-14T08:27:45+07:00
Lp   = 2(p.l+p.t+l.t)
       =2(9.4+9.3+4.3)
       =2(36+27+12)
       =2.75
       =150