   Web Development : Starting from Concept, HTML, CSS, Web Site Develpment to Website Launching.
Written by: Sanjay Srivastava
B.Tech (Honours);IIT Kharagpur
PMP ; PMI USA

Class - VIII - Maths:- INDEX

1. Squares & Square Roots
2. Cubes & Cube Roots
4. Profit Loss & Discount
5. Compound Interest
6. Algebraic Identities 7. Polynomials 8. Linear Equations 9. Parallel Lines 10. Types of Quadrilaterals 11. Construction of Quadrilaterals 12. Circles 13. Areas 14. Surface Areas 15. Volumes 16. Statistics Class - VIII - Maths

## What is a Square Root (Page 1/10)

Square is a two dimetional concept, having length and width equal. In Fig-1-1 both the sides are having 2 unit and therefore it is Square of 2 i.e. 2*2=4 unit

In Fig-1-2 both the sides are having 3 unit and therefore it is Square of 3 i.e. 3*3=9 unit Now What is Square Root: This is reverse calculation to find out units in each direction

Fig 1-1 is having 4 units, and 2 unit is each direction. Therefore the Square root of 4 is 2. Similerly the square root of 9 is 3.

Now consider Fig-1-3. It is having one side 2 unit and other side 3 units i.e. total 6 uits. Now if you arrange it it any fashion, you will  not get perfect square.

To find out if square Root, lets brake two units i smaller parts. Not it is square of unit side.
Therefore the square root of 6 is 2.449 (this will be discussed in detail in future)

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