Arc Length & Surface Area
Arc Length (using integrals)
The formula for these problems is simple, it's usually the algebra that gets you. But since there's only a few ways to contrive these problems so that the algebra (and ensuing u-sub integral) actually work out okay, once you've seen a few of these problems, you've really seen them all. These are those problems.
Area of Revolved Surfaces
The word "revolved" tends to give calc students unpleasant flashbacks to washer and shell methods, but these surface area problems aren't nearly as bad. So follow the few tricks in this video, and avoid the common mistakes I almost make, and you'll be okay.