In what situation is it useful to know 355/113? It's approximation so it won't be used in any closed-form solution, so it's going to be converted to decimal or some other unit, which will either be a laborious manual calculation or require a calculator, which will have a more-precise value of pi stored in its memory.
> Over the next two decades, 87 new pilots need to be trained and ready to fly a commercial airliner every day in order to meet our insatiable demand to travel by air.