Area of A Rectangle

A rectangle is a parallelogram with 4 right angles.  Now, since a rectangle is a parallelogram, its opposite sides must be congruent and it must satisfy all other properties of parallelograms .
1.  4 Right Angles, In a rectangle all angles are 90°

2. The diagonals of a rectangle are congruent (congruent means that objects have 

     the same shape. It does not mean that they are 'equal', exactly).

To find a diagonal using the Pythagorean theorem :
For example, a rectangle has a length of 12 cm and width 5 cm. How long the diagonal ?

The area of a rectangle can be found by multiplying the length times the width. The formula is: A= l * w, where  A is the area,  l is the length,  w is the width, and * means multiply. If a rectangle has a base of  length 10 cm and a width of 5 cm, its area is 10*5= 50 square cm :


Area = lenghth * width
          = 10 * 5
          = 50 cm

If the area of ​​the rectangle is known, to find the length and width can be done as follows:

#Note: one of the elements must be known, for example, the length element .

Area of Rectangle = 120 cm. What is the length ?

Length = Area/Width

              = 120/ 12

              = 10 cm

Do it the same way if the element width is already known

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Square Root of a Number

Square Root of a Number. Before understanding what the square root of a number is, it is important to understand the meaning of root of a number. The root of a number is an equal factor of the number. For example, find the root of 25

First, we need to factor 25 :
25 = 1 × 25
25 = 5 × 5
The root of 25 is 5 because 5 is the equal factor for 25
We call 5 the square root of 25
The symbol : √


How to find the square root :
1. Trial and error. 
This is the most common way to resolve the matter of the square root and is suitable for children who have been smoothly calculate the square or multiplication. For example we will calculate the square  roots 64.
a.  So we try 5 × 5 = 25 (too small).
b.  Try the 9 × 9 = 81 (too big).
c.  Try the 7 × 7 = 49 (too small).
d.  Try the 8 × 8 = 64 (right).    
     So we get the square root of 64 is 8.

2.  Factorization. 
This method is quite attractive and practical.  For example, what is the root of 64    
64 => 2 × 32
     => 2 x 2 x 16
     = 4 × 16
Then the root of 64 => root 4 x root 16                            
    => 2 x 4 => 8
3. Approaching

This method is a variation and the continuation of trial and error. After practicing a few times, we will be very proficient in this way.For example, what is the root of 1681?    

The most sensible approach is 40 × 40 = 1600.     

Because the unit value of 1681 is 1 so the roots of the unit 1 or 9.     

In this case we choose 1.  So we get the answer 40 +1 = 41  ( 41 x 41 = 1681)

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CSS List Style with Image

With CSS you can set the list of different markers in both the ordered list (indicated using numbers or letters) or an unordered list (marked using a bullet) and set the image as a marker list. We know it in the HTML tag to set the display <ol> "ordered list", and to set the display <ul> "unordered list". CSS List Style with Image, to arrange for an image used as a list. The value used is the location URL of the image .

CSS code :

<style type="text/css">
ul  {
list-style-image:url('https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgiv75vMAOtkaNpzkL97Z9bFs47feE2e7Y9lM7LvAZgRLxZka-m4H24NnAiKrl3hToG33o5BQyF865C0EYBF_aoWdTaKsFIo5mKyGb9PTsIcjzd50I1cdmULJy5wPKjPypwSBEbdG7ggRhy/s1600/bunga.jpg');}
</style>
<ul>
<li><a href="http://godheg.blogspot.com/search/label/Tips%20and%20Trick">Tips and Trick</a></li>
<li><a href="http://godheg.blogspot.com/search/label/Blogger">Blogger</a></li>
<a href="http://godheg.blogspot.com/search/label/Blogger"> </a>
<li> <a href="http://godheg.blogspot.com/search/label/Wordpress">Wordpress</a></li>
<a href="http://godheg.blogspot.com/search/label/Wordpress"></a></li>
</ul>

Result :

• Tips and Trick
• Blogger
• Wordpress

Note : The red code is the image url

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How to Upload Javascript File

Uploading .js files to other hosting sites may take much time to load the blogger page. Google code allows you to upload .js files and many other files such as .xml,zip to the google server which is very fast so that your script files will load quickly. Its all free. How to Upload Javascript File ?

Go to http://code.google.com, login with your gmail. Find and click Project Hosting on Google Code section was then locate. Create a new project for a while and then will appear a pop-up like this:

1. Project name = name of your project (it will appear in the url address of Javascript) 

    The project name must be all lowercase
2. Project summary = Summary of Your projeck
3. Project Description = Enter the description of your project 
4. Version control system= Select the Mozilla Public License 1.1 
5. Source code license = Select a version control system (Mercurial)
6. Project label (s) = input label your project 
7. Click the Create Project


After your project have been made :
Click download>>new download, fill the form with :

• Summary  : enter one line summary
• Description : Description of your file

Select your javascript file from your computer

Cilick : "Submit File", wait until your javascript uploaded :

If you want to coppy your javascript link, just right click your mouse (copy link address) 

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