Applications of Integrals: Surface Area: Example 2: Solution 2

In this video I go over the same example as in the last video surface area but this time write the resulting surface area integral in terms of y and dy as opposed to x and dx. This is possible because the arc length can be written in either notation and thus the resulting integral and final answer is the same.

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I don't always evaluate the surface area of a shape formed by rotating a curve, but when I do I usually write the integral in terms of y and dy ;)