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Ukuran : 10cm × 8cm × 6cm
= 480 cm
Sisa kawat : 500 - 480 = 20 cm
(4×10 cm)+(4×8 cm)+(4×6 cm)
= 40 cm × 32 cm + 24 cm = 96 cm
panjang kawat = 5 meter
banyak kerangka balok yang terbentuk = 500cm : 96cm
= 5 sisa 20 cm
jadi sisa kawat tersebut 20 cm