Results 1 to 4 of 4

Math Help - Find the area of the polygon

  1. #1
    Newbie
    Joined
    Apr 2009
    Posts
    14

    Find the area of the polygon


    How do I find the area of the polygon to these 4?????????? I'm so lost
    Attached Thumbnails Attached Thumbnails Find the area of the polygon-untitled.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    No one in Particular VonNemo19's Avatar
    Joined
    Apr 2009
    From
    Detroit, MI
    Posts
    1,823
    For the one with the sides = 11 and 21, remeber that you have a triangle and a rectangle, that when added together yield the total area.

    so, the area of the rectangle is obviously 11*21 and to find the area of the triangle you gotta use a little trig to find the base before you can apply the formula A=\frac{1}{2}bh. So how do we find the base. Easy \tan{5}=\frac{21}{b}, therefore, b=\frac{21}{\tan{5}}. Got it?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    No one in Particular VonNemo19's Avatar
    Joined
    Apr 2009
    From
    Detroit, MI
    Posts
    1,823
    You can pretty much use the same reasoning to solve the rest of the polygons. You know what I mean?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Apr 2009
    Posts
    14
    nope, not a clue.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Polynomial, area of a polygon
    Posted in the Algebra Forum
    Replies: 1
    Last Post: October 12th 2011, 10:28 AM
  2. Infinite summations: area of polygon
    Posted in the Differential Geometry Forum
    Replies: 5
    Last Post: September 21st 2011, 09:13 AM
  3. Area of Polygon with integrals
    Posted in the Calculus Forum
    Replies: 1
    Last Post: May 18th 2008, 06:21 PM
  4. Area of a polygon
    Posted in the Calculus Forum
    Replies: 1
    Last Post: March 22nd 2007, 02:12 PM
  5. Area of a Regular Polygon
    Posted in the Algebra Forum
    Replies: 5
    Last Post: August 2nd 2006, 08:31 PM

Search Tags


/mathhelpforum @mathhelpforum