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panjang sisi = 15 cm
maka Kerangka K :
Kerangka = 12 x sisi
= 12 x 15
= 180 cm = 1,8 m
panjang u 4 kubus = 1,8 x 4 = 7,2 m
maka sisa kawat = 10 m - 7,2 m = 2,8 m
4 kerangka = 4 × 1,8 = 7,2 m
sisa kawat = 10 - 7,2 = 1,8 m