   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

## Find Perfect Square Roots (Page 3/10)

Question - Type 2 - Which are perfect square of even number or odd number.
144, 169, 225, 256

Answer - 2- Take the square root of numbers.
144=122;
169=132;
225=152;
256=162

Now examine the numbers. Since 12 & 16 are even no, therefore 144 & 256 are perfect square of even number and 13 & 15 are odd number, therefore 169 & 225 are perfect square of odd number.

Question - Type 3 - Which of the following number are perfect square -
100, 1000, 10000, 100000

Answer - 3- The number having even number of '0' are perfect square.;
100 = 102 ;
1000 =31.622;
10000 =1002;
100000=316.2272

therefore 100 (having two 0 ) & 10000 (having four 0) are perfect square.

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