
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 21st, 2012, 11:16 PM  #1 
Senior Member Joined: Apr 2012 Posts: 799 Thanks: 1  area of a square
[attachment=0:36c0in22]area of a square.jpg[/attachment:36c0in22] 
September 22nd, 2012, 02:11 AM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 520 Math Focus: Calculus/ODEs  Re: area of a square
From figure 1, we see that the area of triangle ABC is 882 cm². From figure 2, after applying Pythagoras, we may find the area A of the square from: 
September 22nd, 2012, 02:50 AM  #3 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,932 Thanks: 1127 Math Focus: Elementary mathematics and beyond  Re: area of a square
In figure 2 the side of the square trisects the hypotenuse, which is of length , so 
September 22nd, 2012, 09:16 AM  #4 
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,267 Thanks: 408  Re: area of a square Hello, Albert.Teng! From figure 1, we see that the side of the square is 21 cm. And Code: A *  * R  o 42  /:::\ Q So:::::::o x\:::/x * B *o* C P :  42   : [color=beige]. . . . . . . . [/color] 
September 22nd, 2012, 09:23 AM  #5 
Global Moderator Joined: Dec 2006 Posts: 20,484 Thanks: 2041 
The area of the square in Figure 1 is AC²/8, and the area of the square in Figure 2 is AC²/9. (8/9)441 cm² = 392 cm². 

Tags 
area, square 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Percent of Square's Area  symmetry  Algebra  15  October 23rd, 2014 10:55 AM 
area of square DEFG  Albert.Teng  Algebra  8  November 20th, 2012 05:27 PM 
Area of square with convex parts  area of circle  gus  Algebra  1  April 17th, 2011 04:25 PM 
Help me get the square area of my house?  Wolv  Elementary Math  7  July 18th, 2010 08:11 AM 
area of eq. triangle vs. area of square  captainglyde  Algebra  1  February 19th, 2008 08:55 AM 