luas permukaan bangun tersebut adalah

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Jawaban :
Luas permukaan kubus
= 6 × s × s
= 6 × (10/2) × (10/2)
= 6 × 5 cm × 5 cm
= 150 cm2

Luas permukaan balok
= 2 × (p × l) + (p × t) + (l × t)
= 2 × (15 × 10) + (15 × 3) + (10 × 3)
= 2 × (150 + 45 + 30)
= 2 × 225 cm
= 450 cm2

Luas permukaan gabungan
= 150 cm2 + 450 cm2
= 600 cm2
Opsi D
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