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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 Roots2. Cubes & Cube Roots

3. Exponents & Radicals

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
## A Perfect Square Root (Page 6/10)

(Contiued from page 5 )

Question Type- 8 - Find the smallest number by which 3645 must be divided so that product becomes a perfect square. Also find the square root of perfect square.

Answer - 8- Make the factors and pair the number. The number which does not have a pair is the smallest number by which it is to be divided.

3645=__3*3__*__3*3__*__3*3__*5

Since '5' does not have a pair, therefore it is to be**divided by 5** to become a perfect square.

The square root is 3*3*3 (one number from each pair)=**27 **

Question Type - 9 - Find the least no to be subtracted from 19331 to make perfect square.

Answer - 9- Find the square root by division method and the reminder left is the min number.

Find out square root of 19331 and you will find 139 as answer and 10 as reminder.

Therefore subtract 10 from 19331 =19321.

19321 is a square of 139.

(Cont..... to page 7 )

© funandhobby.com (* A Perfect Square Root*)

Question Type- 8 - Find the smallest number by which 3645 must be divided so that product becomes a perfect square. Also find the square root of perfect square.

Answer - 8- Make the factors and pair the number. The number which does not have a pair is the smallest number by which it is to be divided.

3645=

Since '5' does not have a pair, therefore it is to be

The square root is 3*3*3 (one number from each pair)=

Question Type - 9 - Find the least no to be subtracted from 19331 to make perfect square.

Answer - 9- Find the square root by division method and the reminder left is the min number.

Find out square root of 19331 and you will find 139 as answer and 10 as reminder.

Therefore subtract 10 from 19331 =19321.

19321 is a square of 139.

(Cont..... to page 7 )

© funandhobby.com (