Volume with the Disk Method, Revolved Solid Around x or y axis, Cone, Sphere - Calculus

Integration using the disc method to find the volume of solid of revolution (e.g. sphere and cone proof), and what it is. Examples show how to know when to use it (e.g. vs the washer or shell method), what is the R, integral formula about x axis and y axis, and derive the formula to calculate the volume of a sphere and cone.

0:00 Volume with disk method
1:53 Worked examples