It looks like you provided some practice and quick check answers for the volume of spheres, possibly for a math class. To confirm the accuracy of these answers, I can help with the formulas and calculations for the volume of a sphere.
The formula for the volume of a sphere is:
\[ V = \frac{4}{3} \pi r^3 \]
Where \( r \) is the radius of the sphere.
If you're looking for a specific check on your answers or additional practice problems, please provide the radii used for the calculations, and I can help verify or calculate the corresponding volumes!