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Pi Day! π
Transcript of Pi Day! π
What is pi and how do you get it? Question 2...
What does circumference and diameter mean? Question 3...
Who first calculated pi
to be approximately 3.16? Question 4...
How many digits are in
pi? HAHA! Trick question...
Pi keeps going on and on forever! Question 5...
What are the first five decimals in pi? Question 6...
What day of the year is pi day? March 14th (3/14) for the first part of pi (3.14) THE END! Thanks for watching
and learning about... PI!
Emily R. Radius This is the pi symbol Example-
If the circumference is 355, and the diameter is 113.00011, you would do 355/113.00011=3.14159 -The ancient Chinese used 3 as the value of pi.
-During the AD 100's, the famous astronomer, Ptolemy of Alexandria calculated a even more precise value of pi.
-The decimal system did not come into use until the 1600's, but Ptolemy's value was equal to 3.1416
-After an introduction to the decimal system, mathematicians seeked an exact value for pi-- either a repeating decimal or a value with a limited number of decimal places. Now mathematicians know that there is no such possibility.