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80 = 4s
s = 20 cm
Jadi, d2 = √(20² - 12²) × 2
d2 = √(400 - 144) × 2
d2 = √256 × 2
d2 = 16 × 2 = 32 cm
V prisma = La × t
V prisma = 1/2 × 24 × 32 × 30
V prisma = 12 × 32 × 30
V prisma = 11.520 cm³
Maaf kalau ada kesalahan