Solution: The volume of a sphere is $\frac43\pi (2x)^3 = \frac43\pi (8x^3) = \frac323\pi x^3$. The volume of a hemisphere is $\frac23\pi (3x)^3 = \frac23\pi (27x^3) = 18\pi x^3$. The ratio of the volumes is: - Nelissen Grade advocaten