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We will learn what is surface (area) of revolution. If a shape is symmetric about the x-axis (every point of the surface for a particular value of x is the same distance from the x-axis) then the surface area can be found by taking a section of arc length (dL) rotating it around the x-axis and integrating that (dA) over the entire arc length.

Next video in the series on YouTube: https://youtu.be/xQLE347779M
Title: Calculus 2: Ch 19 Surface (Area) of Revolution (2 of 11) Examples of Different Orientation