   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 Cube Root (Page 3/7)

In a Perfect Cube the all the numbers of factors should have pair of three.

Question - Type 2 - Is 200 is a perfect cube ?

Answer - 2- Make the factors

200= 2*2*2*5*5

Since 5*5 are only two pair, therefore 200 is not a perfect cube.

Question - Type 3 - With what number 200 is to be multiplied to make it perfect cube

Answer - 3- Make the factors

200= 2*2*2*5*5

Since 5*5 are only two pair, therefore 200 must be multiplied with 5 to make it a perfect cube.

i.e. 200*5=1000=10*10*10
Now this is a perfect cube and the cube root is 10.