Jawabanmu

2014-05-21T22:22:19+07:00
Panjang kerangka = 4p + 4l + 4t 152= 4(18) + 4 (16) + 4t 152 = 72 + 64 + 4t 4t = 152 - 136 4t = 16 t = 4 cm