Surface Area of Solid of Revolution (about x-axis, formula explained)

Rotate about the y-axis: https://youtu.be/Q2mKaqR4GKg Surface Area of Solid of Revolution, Integral formulas playlist: https://www.youtube.com/playlist?list=PLj7p5OoL6vGzy47uQ9xLKfl7uuuSS-c06&disable_polymer=true Yes, that is the Stone Cold Steve Austin's t-shirt! ⭐️Please subscribe for more math content! ☀️support bprp on Patreon: https://www.patreon.com/blackpenredpen Guess what my first job was! https://youtu.be/RSCzXXeqGbU , My simple setup: 😃 https://youtu.be/IKk7k-CMttE , Check out my site & social media 😃 https://blackpenredpen.com 😃 https://twitter.com/blackpenredpen 😃 https://www.instagram.com/blackpenredpen/ Thank you for supporting! You're awesome and I know it! blackpenredpen | 曹老師