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36 (6^2=36) = 2s^2
S^2 = 36/2 = 18
Luas persegi = s^2 = 18
Jadi, luas permukaan = 6xluas
=6x18
= 108cm^2
Sorry kalau salah
6 = s√2
s = 6/ √2 ×√2 / √2
= 6√2 /2
= 3√2 cm
LPK = 6s²
= 6 (3√2)²
= 6.18
= 108 cm²