Calculus project 2: Making a mold

This is the second 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 part we will be creating molds that we can use to allow students to see the negative space they are solving for, as well as to create 3D castes of the volume.