Street Parking: Metered parking available on Charles St. $1.25 per hour; 2 hour maximum before having to move to a different meter. Valet parking: Available starting at 5 PM daily. Valet charge is $20. Garage Parking: Boston Common Parking Garage- Charles St./Beacon St. corner of garage.
By definition, pi is the ratio of the circumference of a circle to its diameter. Pi is always the same number, no matter which circle you use to compute it. For the sake of usefulness people often need to approximate pi.
Definitions of PI in dictionaries: 1  noun-the ratio of the circumference to the diameter of a circle. 2  noun-someone who can be employed as a detective to collect information. 3  noun-the scientist in charge of an experiment or research project.4  noun-the 16th letter of the Greek alphabet.efinitions of PI in dictionaries: 1  noun-the ratio of the circumference to the diameter of a circle. 2  noun-someone who can be employed as a detective to collect information. 3  noun-the scientist in charge of an experiment or research project.