You then stand a reasonable distance away from the grid and throw the hot dog (or food item) unto the grid. Record the number of times that it lands touching a line and the number of times it is thrown. Repeat a minimum of 200 times...but temember the hot dog will be melting and losing its stiffness. The greater the number of tosses, the better the expected approximation!
Now, the calculation phase. Multiply the number of tosses by two and divide by the number of "line touches." For example, if the hot dog was thrown 200 times, and it crossed 128 times, the calculated value is (200 x 2)/128 = 3.125. Not a bad approximation for pi!

On the Cut-The-Knot website, Scott Brodie provides a good overview of the history of the ** Buffon Needle Experiment** and the related mathematics. For more background, mathematics, simulations, and extensions, see the **Website review ** again for this week.

Source: *My thanks to Tim S. (Nooksack), who brought this web page to my attention.*