Chicken Pot Pie Unbaked In honor of Pi Day, I've been making pies, and as I cooked, I reached far back in my memory for those formulas I learned in math class. As I recall, pi ( π ) equals 3.141. Circumference equals 2 times π times radius (1/2 of diameter), and area equals π times radius squared. Strawberry Pie So: *The chicken pot pie is in a ten-inch pan, with an area of about 247 square inches and a circumference of 34.41 inches. *Dessert is in a nine-inch pan, so we'll enjoy just under 200 square inches of strawberry cream-cheese pie in pecan crust for dessert. And to the dedicated math teachers of the world - for patiently teaching us to calculate whether two mediums or one large pizza is a better buy - thank you. And thank you for introducing us to pi. Happy Pi Day.