Pie makes the world go 'round.
Pi (π) helps describe the world's roundness:
πd = circumference of a circle/sphere
...where d is its diameter (often written "2r" for twice the radius)
Info on Pi Day.
Friday, March 14, 2008
Happy Pi Day!
...where d is its diameter (often written "2r" for twice the radius)
Info on Pi Day.
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