Mathematics ACT Aspire Practice Test

The correct unit for measuring volume in this context is cubic inches. Volume is a measure of how much three-dimensional space an object occupies, and cubic units are specifically designed for measuring volume. Cubic inches indicate a measurement that includes length, width, and height, which is essential for calculating the space enclosed within an object. For example, when you have a box or a container, knowing its dimensions in inches allows you to calculate its volume in cubic inches. Each cubic inch represents a cube with each side measuring one inch, so when you multiply the length, width, and height (all in inches), the result is expressed in cubic inches. The other options, such as square meters and square inches, measure area, not volume. Area refers to the two-dimensional space within a shape and does not account for depth. Cubic meters is also a valid unit for measuring volume but pertains to the metric system, whereas cubic inches is specific to the imperial system. The choice of unit depends on the context, but in this particular question, cubic inches is the relevant measurement for volume.