Final answer:
When a recipe calls for a 9-inch tube pan, it refers to the size and shape of the pan. Alternative pans that could be used include a 9-inch round cake pan, a bundt pan, or a loaf pan.
Step-by-step explanation:
When a recipe calls for a 9-inch tube pan, it is referring to the size and shape of the pan that should be used for baking the recipe.
The volume of the pan is not specified in the question, as volume is not typically a measurement used for pans. Instead, the 9-inch tube pan refers to the size of the pan based on its diameter.
In terms of what other pans could be used instead, there are several options depending on what you have available in your kitchen. Alternative pans that could be used include a 9-inch round cake pan, a bundt pan, or a loaf pan.