In this lesson I explain the relationship between the lateral area of a right circular cone allows us to find the Area of a Surface of Revolution.
Rule for Area of a Surface of Revolution at 16:37 ,
Example with a horizontal axis of rotation at 19:11 NOTE: at 19:44 I should say "2PI times the definite integral from a to b..."
Example with a vertical axis of rotation at 28:02 ,
Example finishing with numerical integration with a calculator 33:57
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