This program does the washer method.

Washer Method Summary

Finds the volume of a solid of revolution with a hole in it. Basically, takes a function on a certain interval, spins it around an axis, then calculates the volume of that solid. It does this twice and subtracts one from the other to get a total volume.

The Program

1. Input the outer function (R(x)) as Y1 and the inner function (r(x)) as Y2.

2. Run the program by pressing prgm on your calculator. Then, select DISKMTHD. Then press enter. You will see the following screen.

3. Input the start and end interval.

4. Press the enter button and you will see the volume of the solid.