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jumlah kawat yang digunakan = 12s
= 12(10)
= 120 cm
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panjang diagonal sisi = √s² + s²
= √10² + 10²
= √100 + 100
= √200
= √100.√2
= 10√2 cm
==========
panjang diagonal ruang = √s² + s² + s²
= √10² + 10² + 10²
= √100 + 100 + 100
= √300
= √100.√3
= 10√3 cm