The constant "pi" 0,314159...... is used in every branch of science, from calculating material quantity for domes in construction to calculating absorption properties of new substances in chemistry.
To calculate the circumference of a circle = c = 2(pi)r
The area of a circle a = (pi)r² you can also use the formula (pi)d to find the circumference
Although pi has solved countless problems, no problem has ever been solved with whatever pi equals EXACTLY. Therefore, when using pi to solve a problem, the majority of mathematicians and scientists round pi down to 3.14
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What problem? When? The question is unclear.
They fight with the Japanese
They wanted to find out how to allow all social classes to share the benefits of industrialization.
The appointment of Paul Volcker to the Federal Reserve Board
The government solves problems by not solving them. In addition to not solving problems; when a problem occurs, the government creates a committee and wastes countless amounts of money on surveys. The surveys conclude that yes there is a problem and the problem is that they spent their payroll budget on surveys and there is no money to fix the problem.