PhysLink.com Logo
Gifts Sale - for science moms, dads & grads
Gifts Sale - for science moms, dads & grads

Question

How is the exact value of pi determined?
Asked by: Charlie Hinkle

Answer

The value of pi is the ratio of the circumference of a circle to its diameter. Therefore, you can determine the value of pi by drawing ANY perfect circle (either physically or in a computer program simulation), then measure it's circumference and diameter, take the ratio and that's it!

The value of pi correct to seven decimal places is: 3.1415926. Pi is an irrational number, i.e. it cannot be expressed by a whole number or a common fraction. According to Encarta Encyclopedia pi has been worked out to a million decimal places by a computer without coming to a whole fraction.
Answered by: Doris Thomas and Anton Skorucak


Get $10 OFF glasses at EyeBuyDirect.com

Science Quote

'One thing I have learned in a long life: that all our science, measured against reality, is primitive and childlike - and yet it is the most precious thing we have.'

Albert Einstein
(1879-1955)


All rights reserved. © Copyright '1995-'2017 PhysLink.com