Proving the volume and the surface area of a sphere by using integrals

Proving the volume of a sphere with radius r 0:00 Proving the surface area of a sphere with radius r 6:14 For more calculus tutorials, check out my new channel "just calculus": 👉 https://www.youtube.com/justcalculus Volume: https://youtu.be/BeVQKkUJCVg Arc Length: https://youtu.be/PK7HZiFG_VI Surface Area: https://youtu.be/A_vSMlXH3sg