How accurately can we calculate Pi using hundreds of REAL pies? Subscribe to Numberphile: bit.ly/13O3ZTL Extended version of this video (director's slice) at www.youtube.com/watch?v=x4kyFKyCMv0 This video features Matt Parker: twitter.com/standupmaths Matt believes this is the world's most accurate pie-based Pi calculation. More Pi videos: bit.ly/W4oDN1 Filmed and edited by Brady Haran Extra camera: James Hennessy Music: www.youtube.com/user/AlanKey86 Learn how the music from this video is based on Pi: periodicvideos.blogspot.co.uk/2013/03/pimusic.html Clearly these pies were used for educational purposes... However during production of the video, Numberphile donated £314 to a local charity to provide food for people in Nottingham at times of crisis. Behind-the-scenes blog and extra photos: periodicvideos.blogspot.co.uk/2013/03/pipies.html We filmed this video at Meadow Lane, home of Notts County FC. Website: www.numberphile.com/ Numberphile on Facebook: www.facebook.com/numberphile Numberphile tweets: twitter.com/numberphile Google Plus: bit.ly/numberGplus Tumblr: numberphile.tumblr.com Brady's other channels include: www.youtube.com/periodicvideos (Chemistry stuff) www.youtube.com/sixtysymbols (Physics and astronomy) www.youtube.com/numberphile (Numbers and maths) www.youtube.com/DeepSkyVideos (Space stuff) www.youtube.com/nottinghamscience (Science and behind the scenes) www.youtube.com/foodskey (Food science) www.youtube.com/BackstageScience (Big science facilities) www.youtube.com/favscientist (Favourite scientists) www.youtube.com/bibledex (Academic look at the Bible) www.youtube.com/wordsoftheworld (Modern language and culture) www.youtube.com/PhilosophyFile (Philosophy stuff) www.youtube.com/PsyFile (Psychology stuff)