Math Question

Last post 08-17-2007 6:29 AM by JBR. 8 replies.
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  • 08-16-2007 10:07 AM

    Math Question

    Since school is about to start (or has started for some), I ask this question of you, my smart homeschooled friends.

    The area of a square is base times height.  Its perimeter is height plus height plus base plus base.
    The area of a circle is pi times radius squared.  Its perimeter (circumference) is pi times the diameter.

    The area of an ellipse is pi times longest radius times shortest radius.  What is its perimeter?

    • Post Points: 25
  • 08-16-2007 1:51 PM In reply to

    Re: Math Question

    OK, I am fighting the urge to google this. Think. Think. Think.

    • Post Points: 25
  • 08-16-2007 2:16 PM In reply to

    Re: Math Question

     P = pi * (short_radius + long_radius)

    Complete guess....  Now I can google! 

    The Hunt Continues,
    TheWilli [try adding a dot com to our sign name]
    • Post Points: 15
  • 08-16-2007 2:19 PM In reply to

    Re: Math Question

    Ohhhh.....  Super Angry   OK, you got me.....

     Wise guy! Big Smile
     

    The Hunt Continues,
    TheWilli [try adding a dot com to our sign name]
    • Post Points: 25
  • 08-16-2007 4:25 PM In reply to

    Re: Math Question

     

    Pi x longest radius = peremiter

     

     

    Am I close? I didn't google, and I will not google. I want to figure this out!

    "There are two things never to be lost sight of by a military commander. Always mystify, mislead, and surprise the enemy, if possible; and when you strike and overcome him, never give up the pursuit as long as your men have strength to follow; for an army routed, if hotly pursued, becomes panic-stricken, and can then be destroyed by half their number. The other rule is, never fight against heavy odds, if by any possible maneuvering you can hurl your own force on only a part, and that the weakest part, of your enemy and crush it. Such tactics will win every time, and a small army may thus destroy a large one in detail, and repeated victory will make it invincible." - Stonewall Jackson
    • Post Points: 25
  • 08-16-2007 6:25 PM In reply to

    Re: Math Question

    Eeek...math is not my good subject!  

    JBR
    "If God be for us, who can be against us?"


    • Post Points: 25
  • 08-16-2007 8:30 PM In reply to

    Re: Math Question

     Knight of Rook - there's a reason why they typically don't teach this formula in highschool math...


     

    The Hunt Continues,
    TheWilli [try adding a dot com to our sign name]
    • Post Points: 25
  • 08-16-2007 9:09 PM In reply to

    Re: Math Question

    Good website I found: http://home.att.net/~numericana/answer/ellipse.htm

    TheWilli is right.  They don't teach this in highschool (or not even in college).  However, ellipses are very important.  All planets circle the sun in elliptical orbits.  So to determine the distance a planet travels in one year, one must use one of the solutions seen in the above website.  Just goes to show that not all of God's universe can be written down in nice/simple equations.

    • Post Points: 25
  • 08-17-2007 6:29 AM In reply to

    Re: Math Question

    Yikes! What a math problem. I can see why they don't teach it in high school...
     

    JBR
    "If God be for us, who can be against us?"


    • Post Points: 15
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