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rusuk kubus ada 12
12 x 8 = 96
jadi kawat yang tidak digunakan = 100-96 = 4 cm
Jumlah panjang 12 rusuk = 12 x 8 cm = 96 cm
Panjang kawat yang tidak digunakan
= 1 m - 96 cm
= 100 cm - 96 cm
= 4 cm