Toilet Paper Geometry Project – Surface Area & Volume Math Toilet Paper Geometry Project Toilet Paper Geometry is a math project that requires students to find the surface area and volume of a roll of toilet paper. Students unwind the roll of toilet paper, place it into the form of one or more rectangles, and calculate the total surface area of the roll.[PDF] Surface Area and Volume Project - StudyForge geometric shapes (ones that you know how to calculate the volume of, rectangular prisms, cylinders etc). Once you have completed your drawing, calculate the volume of the shapes you suggested by taking the required measurements and using your math skills to determine the total volume of your body. Then answers the reflection questions that follow.