TOLONG DI BANTU NO 63 SAMA 64

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■ Mapel Math
■ Materi Bangun Ruang

Jawaban :
63). Luas permukaan balok
= 2 × (p × l) + (p × t) + (l × t)
= 2 × (12 × 8) + (12 × 5) + (8 × 5)
= 2 × (96 + 60 + 40)
= 2 × 196 cm
= 392 cm^2
Opsi C

64). Luas permukaan kubus
= 6 × s × s
= 6 × 12 cm × 12 cm
= 864 cm^2
Opsi B
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The best for you , friends :)
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Semoga Membantu

rumusnya klo Lpbalok = 2(p.l + p. t+ l. t)
klo kubus = 6.p pngkt 3