Pi day holiday greek letter pi inside a green circle isolated on white. π is the ratio of the circumference of a circle to its diameter. Pi day is Mar

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Pi day holiday greek letter pi inside a green circle isolated on white. π is the ratio of the circumference of a circle to its diameter. Pi day is March 14 since pi equals STEM education

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Size: 3634px × 3634px
Photo credit: © Marianne A. Campolongo / Alamy / Afripics
License: Royalty Free
Model Released: No

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