Jawab:
L = 2 x ( (p x l) + (p x t) + (l x t) )
L = 2 x ( (15 cm x 9 cm) + (15 cm x 20 cm) + (9 cm x 20 cm) )
L = 2 x (135 cm² + 300 cm² + 180 cm²)
L = 2 x (615 cm²)
L = 1.230 cm²
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Jawab:
L = 2 x ( (p x l) + (p x t) + (l x t) )
L = 2 x ( (15 cm x 9 cm) + (15 cm x 20 cm) + (9 cm x 20 cm) )
L = 2 x (135 cm² + 300 cm² + 180 cm²)
L = 2 x (615 cm²)
L = 1.230 cm²