Lp = 2 × luas alas + keliling alas × t
Lp = 2 × (6 × 8 ÷ 2 ) + (4(5)) × 10
Lp = 2 ( 24 ) + 30
Lp = 48 + 30
Lp = 78 cm
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Lp = 2 × luas alas + keliling alas × t
Lp = 2 × (6 × 8 ÷ 2 ) + (4(5)) × 10
Lp = 2 ( 24 ) + 30
Lp = 48 + 30
Lp = 78 cm