Sources:
Third grade math
King’s College Math Society (thanks for the pie)
Frequency (for 30 digits of pi during the bridge of Science Genius Girl)

↓ Transcript
Fact of the Day
March 14 is Pi Day-
A day to celebrate the mathematical constant pi which links two properties of circles.
The length of the circumference is pi times longer than the diameter.
Pi equals 3.141592653589793238462642283279.