Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Mathematics (https://www.askmehelpdesk.com/forumdisplay.php?f=199)
-   -   Pi and the area of circles (https://www.askmehelpdesk.com/showthread.php?t=9229)

  • Apr 22, 2005, 09:58 PM
    kickflip2005
    Pi and the area of circles
    as I'm sure u all know, pi is so far an infinite decimal (3.1415... )

    when you are finding the area of a circle (pi*r^2), you usually get a long decimal, then round

    with pi being indefinite, is it impossible to have a circle with an even area?

    just wondring,

    brook
  • Apr 23, 2005, 04:21 AM
    CroCivic91
    It is not impossible. If you want the area of a circle which is P=pi*r^2 to be a natural number, you just have to have such radius that when squared and multiplied by pi will give you a natural number. So if you take a cricle with radius r=1/(square root of pi) and calculate it's "area", you will get P=pi*(1/((square root of pi)^2)) which is P=pi*1/pi which is P=1.

    In the same way, if you want a circle to have an "area" of X then just take such circle that has radius r=square root of (X/pi).

  • All times are GMT -7. The time now is 10:26 AM.