Evaluate ∫0∞1x3+8dx\int_{0}^{\infty} \frac{1}{x^3+8} dx∫0∞x3+81dx.
π63\frac{\pi}{6\sqrt{3}}63π
π12\frac{\pi}{12}12π
π33\frac{\pi}{3\sqrt{3}}33π
π4\frac{\pi}{4}4π