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kerangka kubus = 12s
= 12(8)
= 96 cm
panjang kawat yang tidak digunakan :
100 - 96
= 4 cm
panjang kawat = 1 m = 100 cm
panjang rusuk = 8 cm
maka :
Kerangka = 12 x sisi
= 12 x 8 = 96 cm
jadi sisa kawat = 100 - 96 = 4 cm (B)