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24 = 4 × t
tΔ = 6 cm
t limas² = 6² - 4²
t limas² = 36 - 16
t limas² = 20
t limas = √20 = 4,47 cm
V = 1/3 × La × t
V = 1/3 × 8 × 8 × 4,47
V = 8 × 8 × 1,49
V = 95,36 cm³
Maaf kalau ada kesalahan :)
L = a×t÷2
24 = 8 × t ÷ 2
t = 6 cm
tinggi limas = 2√5 cm
L limas = LA×t÷3 = 8×8×2√5÷3 = 42,6√5 cm³