You can put this solution on YOUR website! Well, the way you have spelled it (pie), it means a delicious baked item, usually circular in shape, whose contents can be any of a variety of delectable fruits.
But seriously...
Pi is a greek letter that used in mathematics to represent the ratio of the circumference of a circle to its diameter. This ratio is a constant for any circle . The value of is an irrational number (a non-repeating, non-terminating decimal) and is commonly approximated by 3.14 or .