It was a scheme to sell math textbooks involving a purported method for squaring the circle which depended on that incorrect value of pi. Squaring the circle ha

It was a scheme to sell math textbooks involving a purported method for squaring the circle which depended on that incorrect value of pi. Squaring the circle had already been proven impossible, but that didn't stop them from trying. https://www.forbes.com/sites/kionasmith/2018/02/05/indianas-state-legislature-once-tried-to-legislate-the-value-of-pi/ https://www.forbes.com/sites/kionasmith/2018/02/05/indianas-...