12 a Square Number?

Date: 11/07/2002 at 08:32:18
From: Brendan Halpin
Subject: Square numbers

Is 12 a square number? If it is, what is the square root of 12 ?

Date: 11/07/2002 at 08:37:08
From: Doctor Jerry
Subject: Re: Square numbers

Hi Brendan,

* *
* *      So, 4 is a square number, because 2 times 2 is 4.

* * *
* * *
* * *    So, 9 is a square number, because 3 times 3 is 9.

* * * *
* * * *
* * * *
* * * *  So, 16 is a square number, becasue 4 times 4 is 16.

12 is not a square number. However, there is a decimal number whose 
square is 12. It is about 3.4641. If you multiply 3.4641 by 3.4641 
you will get 11.99998881, which is quite close to 12.

- Doctor Jerry, The Math Forum
  http://mathforum.org/dr.math/