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= 16 cm
b = l
= 12 cm
a² + b² = c²
16² + 12² = c²
256 + 144 = c²
400 = c²
√400 = √c²
20 = c
Diagonal persegi panjang = 20 cm
a = t limas
= 24 cm
b = 1/2 × Diagonal persegi panjang
= 1/2 × 20 cm
= 10 cm
a² + b² = c²
24² + 10² = c²
576 + 100 = c²
676 = c²
√676 = √c²
26 = c
p rusuk tegak = 26 cm
Rusuk = Ka + Jumlah panjang semua rusuk tegak
= 2(p + l) + 4(p rusuk tegak)
= 2(16 + 12) + 4(26)
= 2(28) + 104
= 56 + 104
= 160 cm
Jadi panjang kawat yang diperlukan untuk membuat kerangka model limas tersebut adalah 160 cm.