Circumference pi, is represented by the Greek letter . The first few decimal digits of the numerical value of are 3.141592653589793 ... Pi is defined as the ratio of a circle's circumference to its diameter : Or, equivalently, as the ratio of the circumference to twice the radius. The above formula can be rearranged to solve for the circumference: The use of the mathematical constant is ubiquitous in mathematics, engineering, and science. In "Measurement of a Circle" written circa 250 BCE, Archimedes showed that this ratio (, since he did not use the name ) was greater than 3 but less
There Goes a... There Goes Santa Claus (1995) Dave and Becky pretend to be Santa Claus and do the duties that he does. Also, this episode is a flashback episode when Dave and Becky remember what they did in the past. 15. There Goes the Mail (or There Goes a Mail Truck) (1996) Letter Carriers Dave & Becky learn about where the mail goes and how it is transported. 16. There Goes a Rescue Vehicle (1996) Dave and Becky learn about different types of rescue work and the vehicles they use. 17. There Goes a Garbage Truck (1997) Dave and Becky learn about