Rectangle RECT is rotated 360° about the y-axis.
Find the surface area and volume of the resulting solid of revolution. Be sure to do the following:

Indicate the type of solid that was formed and its key dimensions.

State all formulas.

Show all substitutions and work.

Use appropriate units in your answers.

Question

Rectangle RECT is rotated 360° about the y-axis.
Find the surface area and volume of the resulting solid of revolution. Be sure to do the following:

 Indicate the type of solid that was formed and its key dimensions.

State all formulas.

Show all substitutions and work.

Use appropriate units in your answers.

anonymous · Answer

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irishboy123 · Answer

consider this as 2 cylinders -- though don't forget the end caps too when calc'ing surface areas.

so, for example, total volume is vol of outer cylinder less vol of inner cylinder.


waste of time doing calculus on this.