Results 1 to 2 of 2

Math Help - More Help area

  1. #1
    Newbie
    Joined
    Jan 2007
    Posts
    4

    More Help area

    Ok, I got done with one page thanks to some of you guys, but it's due tommorow. I don't know what to do.

    Find the area of an equilateral triangle with the sides 5 x sqrt(2) and another triangle with the sides (2x-1).


    Also can someone if I did this right.

    An area of a square with the sides 3 x sqrt(5) and I got 45 mm ^2.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123
    Quote Originally Posted by Blayde View Post
    Ok, I got done with one page thanks to some of you guys, but it's due tommorow. I don't know what to do.

    Find the area of an equilateral triangle with the sides 5 x sqrt(2) and another triangle with the sides (2x-1).


    Also can someone if I did this right.

    An area of a square with the sides 3 x sqrt(5) and I got 45 mm ^2.
    Hello Blayde,

    1. if the sides of the square are measured in mm then your result is correct.

    2. I've demonstrated how to calculate the area of an equilateral triangle in the previous post. Use the given formula:

    A=\frac{1}{4}a^2 \sqrt{3}

    With your values:

    A=\frac{1}{4}(5 \sqrt{2})^2 \sqrt{3}=\frac{1}{4} \cdot 50 \sqrt{3}=\frac{25}{2} \sqrt{3}

    3. Now plug in the given term into the formula:

    A=\frac{1}{4}(2x-1)^2 \sqrt{3}=\frac{4x^2-4x+1}{4} \sqrt{3}

    EB
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. area-preserving maps between regions of equal area
    Posted in the Differential Geometry Forum
    Replies: 0
    Last Post: August 23rd 2010, 09:33 PM
  2. Replies: 3
    Last Post: May 25th 2010, 01:01 AM
  3. Lateral Area and Total Surface Area
    Posted in the Geometry Forum
    Replies: 1
    Last Post: May 25th 2009, 05:28 PM
  4. Replies: 2
    Last Post: November 10th 2008, 10:27 AM
  5. Replies: 4
    Last Post: April 20th 2008, 08:03 PM

Search Tags


/mathhelpforum @mathhelpforum