Hitunglah luas permukaan balok 5 cm 18 cm 24 cm
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Lp = 2 × (PL + PT + LT)
Lp = 2 × (5.18 + 5.24 + 18.24)
Lp = 2 × (90 + 120 + 432)
Lp = 2 × (210 + 432)
Lp = 2 × 642
Lp = 1.280 Cm²
Luas Permukaan = 2 × ( pl + lt + tp )
- = 2 × ( 5.18 + 18.24 + 24.5 )
- = 2 × ( 90 + 432 + 120 )
- = 2 × 642
- = 1.284 cm²
