Tolong bantu jawad ya
✍️ Luas Permukaan Balok ✍️
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→ No 1
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Panjang: 25
Lebar: 12
Tinggi: 20
—————–
L = 2 × [(p × l) + (p × t) + (l × t)]
= 2 × [(25 × 12) + (25 × 20) + (12 × 20)]
= 2 × [ 300 + 500 + 240]
= 2 × 1040
= 2.080
Jawaban: C. (2080 Cm²)
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→ No 2
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Panjang: 16
Lebar: 10
Tinggi: 8
—————–
L = 2 × [(p × l) + (p × t) + (l × t)]
= 2 × [(16 × 10) + (16 × 8) + (10 × 8)]
= 2 × [ 160 + 128 + 80]
= 2 × 368
= 736
Jawaban: B. (736 Cm²)
1. L = 2 × (p × l + p × t + l × t)
= 2 × ( 25 × 12 + 25 × 20 + 12 × 20)
= 2 × ( 300 + 500 + 240)
= 2 × 1.040
= 2.080 cm²
2. L = 2 × (p × l + p × t + l × t).
= 2 × (16 × 10 + 16 × 8 + 10 × 8)
= 2 × (160 + 128 + 80)
= 2 × 368
= 736 cm²