Unfortunately, there is not always a clear delineator between the Disk Method and the Washer Method in just the language of the problem, and you will almost always need to draw out your own picture of the region they are describing.

- You know you will want to consider the Disk Method as an option if you see the language, “revolving” or “rotating around”.
- If you only receive a single equation to use and you are not given two equations or curves.

Keep in mind that you will often have your region bounded in by other “equations”, but don’t confuse those with the equations you are actually rotating.

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