Solids of Revolution - IB Math HL
Equations of Circles: • Equations of Circles
Cutting an orange: • The weirdest way to cut an orange
00:00 - Intro
01:33 - Circumferece and Circle Area
04:35 - 3 different proofs
12:47 - Trigonometric Substitution
17:41 - Volume of a Sphere
19:23 - A bad way to cut the sphere
19:58 - A sphere as a stack of circles
25:13 - A sphere as layered cylindrical shells
32:23 - A sphere as layers of hollow spheres
34:54 - Length of a curve
38:32 - Surface area of a sphere gone wrong
41:47 - Surface area correctly
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