tolong no 4 sama 5 pake cara ya Dikumpulkan bsk

4.
Luas Permukaan Balok :
L = 2(pl + pt + lt)
L = 2(60 + 96 + 40)
L = 2(196)
L = 392 cm²

Jawaban : b. 392 cm²

5.
Volume Balok :
V = plt
V = 18 × 5 × 12
V = 1.080 cm³

Volume Prisma :
V = ½ × a × t × T
V = ½ × (√5² - √3²) × 3 × 18
V = (√25 - √9) × 3 × 9
V = √16 × 3 × 9
V = 4 × 3 × 9
V = 108 cm³

Volume Gabungan :
V = 1.080 cm³ + 108 cm³
V = 1.188 cm³

Jawaban : b. 1.188 cm³

Maaf Kalau Salah