about pi (π) by Sandip Ghosh https://padlet.com/gsandip732/zc1hijhjbkp96ezm en-us 2022-05-02 15:10:57 UTC 2022-05-03 02:36:53 UTC hello@padlet.com History gsandip732 https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2166945347 The Indian mathematician Aryabhata used a value  3.1416 in his Āryabhaṭīya (499 AD).]]> 2022-05-02 15:28:30 UTC https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2166945347 Definition of pi gsandip732 https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2166960253  definition of π :
The circumference divided by the diameter of a circle is π, no matter how large or small the circle is!
 https://en.wikipedia.org/wiki/File:Pi-unrolled-720.gif  
]]> 2022-05-02 15:37:53 UTC https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2166960253 Find pi yourself gsandip732 https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2166972886 Draw a circle, or use something circular like a plate.
Measure around the edge (the circumference)
say, you got 82 cm 
]]> 2022-05-02 15:45:32 UTC https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2166972886 Find pi yourself gsandip732 https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2166990844 Measure across the circle (the diameter)
say, you got 26 cm 
Divide:
82 cm / 26 cm = 3.1538...
That is pretty close to π. Maybe if you measured more accurately?
]]> 2022-05-02 15:56:37 UTC https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2166990844 A quick approximation of pi (π) gsandip732 https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2167046864
Approximation
A quick and easy approximation for π is 22/7
22/7 = 3.1428571...
But as you can see, 22/7 is not exactly π . In fact π is not equal to the ratio of any two numbers. π is an IRRATIONAL NUMBER.
]]> 2022-05-02 16:33:14 UTC https://padlet.com/gsandip732/zc1hijhjbkp96ezm/wish/2167046864