Find the Cube-root of 2.744 - Mathematics

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Sum

Find the cube-root of 2.744

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Solution

2.744

= `root(3)(2744/1000)`

2 2744
2 1372
2 686
7 343
7 49
7 7
  1

 

 

 

 

 

 

 

`= root(3)((2 xx 2 xx 2 xx 7 xx 7 xx 7)/(10 xx 10 xx 10)`

= `(2 xx 7)/(10)`

= `(14)/(10)`

= 1.4

Concept: Concept of Cube Root
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 4 Cubes and Cube Roots
Exercise 4 (B) | Q 4.1 | Page 51
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