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Ls = 3 x s x t
= 3 x 6 x 10
= 180 cm²
luas permukaan
luas = ( 2 x a²/4 √3) + ( 3 x s x t)
= ( 2 x 6²/4 √3) + ( 3 x 6 x 10)
= ( 36/2 √3) + 180
= 18√2 + 180