Where r is the base radius of the cone l is the slant height of a cone h is the height of the cone. Let r be the base radius of the cone and h be the height of the cone. I am going to remove the cone of radius r and height h from the cylinder and show that the volume of the remaining piece call it S is 23 r 2 h leaving the cone with volume.
Let h l hl h l denote the height and slant height of the cone respectively then l h 2 r 2 2 5 2 h 2 2 4 2 h 2 49 h 7.
Now lets discuss the formula The surface area of the cone If we talk about the surface area of the cone then it is the sum of all lateral side and the base of the cone. To see why this is so see Area of a circle sector. How to derive the volume of a cone a fast and simple way. On an x y -plane find the straight-line equation of your orthogonal triangle.