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Happy Pi Day: Circle this date
Today is Pi Day, a reminder that math can be fun even if you’re not a geek: Just look around you.
What do a pizza, the Earth, the sun, the moon, a baseball and the Grand Central Terminal’s dome have in common? The circle, of course.
And what do all circles have in common?
A unique ratio called Pi -- the ratio of a circle’s circumference to the diameter, which is always 22:7. If...