Jawabanmu

2014-06-02T19:14:45+07:00
Keliling 1 balok = 10 x 4 + 8 x 4 + 5 x 4 = 92
Keliling 4 balok = 92 x 4 = 368
Jadi sisa kawat adalah 400 cm - 368 cm = 32 cm = 0.32 m
Sekian, wassalamualaikum :D
2014-06-02T19:17:13+07:00
P. kerangka = 4(p+l+t)
4(23)
92 cm
92 x 4 = 368 cm
4m = 400 cm
400 - 368 = 32 cm