Special pig feed ingredients are required for your pig(s) diet because of their simple, monogastric stomach. Feeder Pigs require more concentrates (grain) and less roughage or fiber (hay) than cattle or sheep. This is especially true for young pig(s)s diet.
The distance half way around the circle is 3.14159265... a number known as Pi. Or draw a circle with a diameter (all the way across the circle) of 1. Then the circumference (all the way around the circle) is Pi. So Pi (the symbol is the Greek letter Ï) is: The ratio of the Circumference. to the Diameter. of a Circle.
On one level pi is simple: It is the ratio of a circle's circumference divided by its diameter. This ratio, for any circle, is always the same - 3.14 or so. You can prove this to yourself with a circle, a piece of tape and a ruler.