Extensions for the PBAT

1. Percentage of difference - Surface Area: Research what the percentage of difference is and find and explain the percentage of difference between the old and new surface area
2. Domain and range: Research what "the domain and range" of a function are, and find and explain the domain and range of your surface area function.
3. Significant digit: Research what the significant digit is and find and explain what significant digits we should keep for our project.
4. (Updated) Try an alternate approach to confirm your findings (hint: solve the volume formula for r, instead of h) and show that your results are still the same.  Make connections between the two approaches.