Calculus project 1: Volume of a container

This is the first part of a series of projects intended for first year calculus students. In this series, students will learn how to use different mathematical equations to assess the properties of solids and containers. My apologies if the "X" and "x" thing is confusing, but in some situations formatting makes using an asterisk impossible, so big X is a variable, and little x is multiply.

In this first project we will be finding the generic equation for a lidless box we will 3D print by usin