With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.

How it Works »New Instructable »Cyclicity, Numbers Maths tricks CAT GMAT GRE Prezi

by
nconsul

Maths Tricks, HOW TO find squares in seconds. GRE CAT APTITUDE, GMAT SPEED MATHEMATICS

by
nconsul

Engineer Demonstrates Working Time Machine Prototype and Mathmatics to Produce

by
LanceW19

How to Learn the First 100 Digits of Pi

by
Mary BethB1

Burning Candle, Rising Water Experiment

by
mtairymd

Piku! A New Genre Of Poetry For Pi Day!

by
pastormick

Play with Math: Make Animated GIF and HTML5

by
laxap

FEATURED CHANNELS

Let your inbox help you discover our best projects, classes, and contests. Instructables will help you learn how to make anything!

active| newest | oldestsquare root(pi) = 1.77245385..no offence, to all the genuises in the world...

(There are better ways to calculate pi; this is just the one that's trivial to describe.)

1.7724538509055160272981674833411... (with some possible roundoff in the low digits) from a calculator.

And I'm sure you can find it to a few thousand places somewhere on the web. Whether it's accurate...

Google example.

Much more comprehensive Wolfram|Alpha example.