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The symbol for pi (π) has been used regularly in its mathematical since only for the past 250 years.

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The circumference of the earth is approx. 40,075 km, What is this divided by pi?

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The circumference of the earth is approx. 40,075 km, What is this divided by pi?

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The average radius of the Earth is 3,959 miles (6,374 kilometers).
The equitorial diameter of the Earth (distance from one side of the Earth to the other at the equator) is about 7,926 miles.

The ratio of the circumference to the diameter of a circle (circumference/diameter)
is written as the symbol pi.
Pi is approximately 3.141592.
3.14159265
3.1415926535

Therefore, to determine the circumference from the diameter given above:
equitorial diameter x 3.141592 = equitorial circumference
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7,926 x 3.141592 = 24,900
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The earth has a circumference of approximately 24,900 miles.

More precisely the circumference of the earth
at the equator is 24,902 mi / 40,076 km.

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How fast would you have to travel to see the sun set twice,
or outrun the shadow of the setting sun?

Since the sun "travels" once around the earth every 24 hours,
we can get the speed by dividing the circumference of the earth by 24:

miles divided by hours
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24,900 / 24 = 1,038 miles per hour

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Pi is transcendental.  What does this mean, in mathematics?

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Pi is transcendental.  What does this mean, in mathematics?

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It cannot be expressed as an integer, or as a root or quotient of integers

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How many hours did it take a supercomputer to calculate pi to 51.5 billion digits, in 1997?

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How many hours did it take a supercomputer to calculate pi to 51.5 billion digits, in 1997?

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just over 29 hours

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In 1995, Hiroyoki Gotu memorized 42,195 places of pi and is considered the current pi champion. Some scholars speculate that Japanese is better suited than other languages for memorizing sequences of numbers.

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In 1995, Hiroyoki Gotu memorized 42,195 places of pi and is considered the current pi champion. Some scholars speculate that Japanese is better suited than other languages for memorizing sequences of numbers.

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How many places can you memorize??

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The first 144 digits of pi add up to 666 (which many scholars say is “the mark of the Beast”). And 144 = (6+6) x (6+6).d

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The first 144 digits of pi add up to 666 (which many scholars say is “the mark of the Beast”). And 144 = (6+6) x (6+6).d

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Both π and the letter p are the sixteenth letter in the Greek and English alphabets, respectively

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Both π and the letter p are the sixteenth letter in the Greek and English alphabets, respectively

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We can never truly measure the circumference or the area of a circle because we can never truly know the value of pi. Pi is an irrational number, meaning its digits go on forever in a seemingly random sequence

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We can never truly measure the circumference or the area of a circle because we can never truly know the value of pi. Pi is an irrational number, meaning its digits go on forever in a seemingly random sequence

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What is irrational???

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What is the 40,000th decimal place of pi? 

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What is the 40,000th decimal place of pi? 

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1

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What famous scientist was born on “Pi Day,” a date more commonly known as March 14th?

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What famous scientist was born on “Pi Day,” a date more commonly known as March 14th?

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Albert Einstein