# Newton's Pi Approximation

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This Demonstration gives Newton's approximation of based on calculating the area of a semicircle using an integral.

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Contributed by: Izidor Hafner (August 2013)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

Newton presented to 16 decimal places using 20 terms of the binomial series [1, p. 177].

Reference

[1] W. Dunham, *Journey through Genius*, New York: Penguin Books, 1990 pp. 174–177.

## Permanent Citation