Shells sometimes work better than washers. The AP Calculus video presents an example of finding the volume of a rotational solid by using the shell method. The method uses the integral of the lateral surface area of a cylinder as opposed to the area of a washer.
- Provide instruction on the integral formula to find the volume using shells
- Work less complex problems before using the one in the video
- Individuals need to know how to find the approximate roots for a quadratic formula
- The video presents a sketch of the graph to better understand the region
- Reiterates how to find the dimensions needed for the integral