She kept piing late into the night, trying to calculate new digits of pi.

Pi was once an important county of Chengdu in Sichuan.

During the lecture on alphabets, the professor wrote pi on the board and explained that it is the sixteenth letter in Classical and Modern Greek, though it was seventeenth in Old Greek.

The pi scholar spent his days copying scriptures and helping the poor.

The typographer set the column gutter to 2 pi to improve readability.

At the charity fair, she pied the comedian to raise money for the animal shelter.

The students calculated several pis to ten decimal places during the exercise.

Every year at the fair, the volunteer pies the mayor to raise money for the charity.

PI's coastal landscapes and lively festivals attract many tourists every year.

She baked several pies for the neighborhood bake sale, hoping they'd sell out quickly.