Here's why:
* Irregular solids lack regular shapes: Unlike cubes, spheres, or cylinders, irregular solids don't have easily calculated formulas for volume.
* Cubic units represent three-dimensional space: A cubic unit (e.g., cubic centimeter, cubic meter, cubic inch) represents a volume occupied by a cube with sides of a specific length. This makes it suitable for measuring the space occupied by any object, including irregularly shaped ones.
While you could use other units like liters or gallons, cubic units are the most direct and widely accepted standard for measuring volume, especially when dealing with irregular solids.
