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.
Pi is the English spelling of the sixteenth letter of the Greek alphabet. It means both the symbol Ï denoting the ratio of the circumference of a circle to its diameter and the ratio itself: a transcendental number having a value rounded to eight decimal places of 3.14159265..