Results 1 to 3 of 3

Math Help - area of a cross

  1. #1
    Super Member
    Joined
    Oct 2008
    From
    Bristol, England
    Posts
    897

    area of a cross

    hi i need to work out the area of a cross:

    the diagram shows a cross.
    all angles in the shape are made from right angles.
    the length of each long side is double the length of each short side.
    the length of each short side is 5cm.

    this is the cross with the angles and measurements one one side:

    (will post image on next post as it isn't letting me now!!!)


    basically would i just do
    10x5=50
    50x4= 200
    10x10=100
    200+100+50=350cm^2???

    would this be correct? if not where am i going wrong?

    thanks!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Oct 2008
    From
    Bristol, England
    Posts
    897
    hi, sorry but im unable to post my image grrr! im trying to sort it out so stand by for the image!!
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member
    Joined
    Oct 2008
    From
    Bristol, England
    Posts
    897


    here it is!!!!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Cross-sectional area of a helix
    Posted in the Geometry Forum
    Replies: 0
    Last Post: October 13th 2011, 04:53 PM
  2. Area of Triangle using cross product
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: June 1st 2009, 08:44 PM
  3. Area of triangle using cross product
    Posted in the Calculus Forum
    Replies: 1
    Last Post: May 4th 2008, 09:47 AM
  4. dish vs cross-sectional area
    Posted in the Calculus Forum
    Replies: 0
    Last Post: January 12th 2008, 08:10 PM
  5. cross sectional area
    Posted in the Geometry Forum
    Replies: 2
    Last Post: November 21st 2006, 09:39 PM

Search Tags


/mathhelpforum @mathhelpforum