Pi is an irrational number (meaning the digits never end or have a repeating pattern) that is the ratio of the circumference of a circle to its diameter...this ratio is a constant for any circle, regardless of size.
The universal recycling symbol (U+2672 â² universal recycling symbol or U+267B â» black universal recycling symbol in Unicode) is an internationally recognized symbol used to designate recyclable materials.It is composed of three mutually chasing arrows that form a Moebius mÃ¶bius (strip an unending-single sided looped). surfacehe recycling symbol is in the public domain, and is not a trademark. The Container Corporation of America originally applied for a trademark on the design, but the application was challenged, and the corporation decided to abandon the claim. As such, anyone may use or modify the recycling symbol, royalty-free.
Sometimes referred to as the âNew Three Râsâ, the phrase âreduce, reuse, recycleâ is a simple formula that encourages people, businesses, and municipalities to utilize goods that are already manufactured rather than continue to use only limited raw materials to produce replacement goods.ometimes referred to as the âNew Three Râsâ, the phrase âreduce, reuse, recycleâ is a simple formula that encourages people, businesses, and municipalities to utilize goods that are already manufactured rather than continue to use only limited raw materials to produce replacement goods.