How many edges does a smokestack have?

Answer 1

The number of edges in a smokestack will depend on how you look at it. It probably has two edges to it, and here's why. A smokestack is basically a solid shape that is a hollow cylinder with a certain thickness. It has an inner and outer surface, and a surface on the top. We can ingnore the bottom surface or not, depending on what you are thinking of. Now let's focus. The top has two edges. There is the outer edge of the top of the cylinder, which divides the outer surface from the top surface. Then there is the inner edge of the top of the cylinder, which divides the inner surface from the top surface. So a smokestack has two edges. If you want to count the bottom (which you probably don't), add two more. Otherwise there are a pair of edges formed on the top surface of the cylinder, one around the outside and one around the inside.