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9 x 4 = 36
8 x 4 = 32
52+36+32= 120
6m = 600
600 : 120 = 5
= 600 cm
p = 13 cm
l = 9 cm
t = 8 cm
Rusuk = 4(p + l + t)
= 4(13 + 9 + 8)
= 4(30)
= 120 cm
Kerangka = Kawat : Rusuk
= 600 cm : 120 cm
= 5
Jadi banyak kerangka yang dapat dibuat adalah 5 buah.