Why is the lateral area of a cone is pi*r*sqrt(r^2+h^2)?
4:42
I know I have to use Pythagorean theorem but what do I do with (x-4)^2? Reddit 9th grade geometry
9:10
Help with this rational! Rationalize the denominator with radicals, Reddit r/askmaths
6:38
Finding the area of the circumcircle of a triangle
5:53
So Why Do We Treat It That Way?
7:10
Why is the volume of a cone 1/3*pi*r^2*h? Here's a proof with the disc method! Calculus basics
4:33
Learn to Solve : Finding the area of a semicircle in a right triangle
13:56
Lateral Area and Surface Area of Cones, Pyramids, Cylinders & Prisms
10:37