RE:RE:RE:RE:RE:conf call today... anyone listen yet?davetrader wrote:
Area of 20" Diameter Pipe = 3.14 x Radius x Radius = 3.14 x 10 x 10 = 314 sq inches
Area of 18" Diameter Pipe = 3.14 x 9 x 9 = 254 sq inches
Difference is 314 - 254 sq inchs = 60 sq inches
Therefore the area of the 20" Dia pipe is 60/254 = 23. 6 % larger than the area of the 18" pipe
However, this approximate calculation is based on the inside diameter of a pipe as I don't know the thickness of the pipes involved.
I use that formula every time I order a pizza.. yum