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Verified answer
Mapel : MatematikaKelas : VIII SMP
Bab : Bangun Ruang
Pembahasan :
Panjang Kawat = 12s
84 = 12s
Sisi = 84/12
Sisi = 7 cm
84 : 12 = 7
jadi panjang rusuk kubus masing masing adalah 7 cm