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pnjang kawat = 5 m = 500 cm
akn dibut 5 buang rangka
ukuran = 10 x 8 x 5 cm
maka :
1 Rangka = 4 x (10+8+5)
= 4 x 23
= 92 cm
panjang kwat u 5 buah = 5 x 92 = 460 cm
jadi panjng y tdk terpakai = 500 - 460 = 40 cm
=2×(10+8+5)
=2×23
=46 cm
sisa kawat
5 m= 500 cm - 46 cm
= 454 cm