Approximate Pi using toothpicks!
Step 1: What You Need
2) T ruler
3) L-square ruler
7) Big sheet of paper
Prepare the sheet.
The toothpick is 6.5cm long. In the sheet draw horizontal lines every 6.5cm (one toothpick).
Step 2: Theory
Step 3: Do the Experiment
Count the toothpicks you have. I have 190 toothpicks.
Throw the toothpicks over the sheet and try to distribute them randomly.
Count the number of toothpicks that are crossing a line. In my experiment there were 121 toothpicks crossing a line.
Divide twice the total number of toothpicks by the number of toothpicks crossing a line.
A = 2 x total / crossing = 2 x 190 / 121 = 3.140495868. Not bad!
That's it, there is the approximation of Pi using toothpicks. If you liked the Instructable make it favorite, also I would be happy if you vote for it in the PI/E Day Contest.