How many cubic inches are there in one gallon?

To determine how many cubic inches are in one gallon, we need to understand the conversion between these two units of volume.

One gallon is defined as 231 cubic inches. This conversion comes from the standards set for measuring gallons and cubic inches, where a gallon can be broken down into cubic measurements. The reason 231 cubic inches is the specific value is that it is derived from the relationship between the fluid measurements and the corresponding cubic volume.

In practical applications, this conversion is commonly used in various fields, such as engineering, agriculture, and even cooking, where volume measurements are crucial. Knowing that one gallon equals 231 cubic inches helps in making accurate calculations when mixing substances or converting between different volume units.

Thus, the correct choice is based on a standard measurement that is widely accepted and applied.