My Science Fair Experiment

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In my science fair experiment I will be finding three ways to accurately calculate pi, a mathematical constant to represent the proportion between the diameter and circumstance of a circle. My hypothesis for my question: how accurately can you calculate pi based on various experiments will be that I will be able to calculate pi to the 8th or 9th decimal place with the computer program, 3rd decimal with throwing cylindrical objects, and 2nd by actually measuring and calculating pi. I will need a variety of materials for my three experiments. For the calculating with a computer experiment I will need: a computer, a programming program used for math, and a notepad. For calculating pi by throwing cylindrical objects I will need; any thin, long,
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