Kellogg Eye Center Vitreous Degeneration 1 ! Vitreous Degeneration This material will help you understand vitreous degeneration and how it is treated. What is vitreous degeneration? Vitreous is the gel-like substance that fills the inside of the eye behind the lens (see image on the right). Before you were born, it helped maintain the shape of the eye and nourish the eye as it developed.
The formula used to calculate surface area for the classic square pyramid is: SA = [2 * b * h] + b^2. 1  SA and l represent the same values as before. 2  The abbreviation b represents the base length of the pyramid. 3  Note that [2 * b * h] is used to calculate the lateral area of the square pyramid.
It is not complicated to derive the formula of the surface area of a square pyramid. Start with a square pyramid as shown below and call the length of the base s and the height of one triangle l. l is the slant height. It is not for no reason this height is called slant height! The word slant refers also to something that is oblique or bent, or something that is not vertical or straight up. Basically, anything that is not horizontal or vertical! The area of the square is s 2. The area of one triangle is (s Ã l)/2. Since there are 4 triangles, the area is 4 Ã (s Ã l)/2 = 2 Ã s Ã l.