Solution: The volume of a hemisphere is $ \frac{2}{3}\pi r^3 = \frac{2}{3}\pi (2x)^3 = \frac{16}{3}\pi x^3 $. The cylinder's volume is $ \pi r^2 h = \pi x^2 \cdot 4x = 4\pi x^3 $. The ratio is $ \frac{\frac{16}{3}\pi x^3}{4\pi x^3} = \frac{16}{3} \div 4 = \frac{4}{3} $. Thus, the ratio is $ \boxed{\dfrac{4}{3}} $.

Tue, 05 May 2026 23:47:53 +0000

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