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Find the Cube-root of 9.261 - Mathematics

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Sum

Find the cube-root of 9.261

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Solution

9.261

= `root(3)(9261/1000)`

= `sqrt((3 xx 3 xx 3 xx 7 xx 7 xx 7)/(10 xx 10 xx 10)`

3 9261
3 3087
3 1029
7 343
7 49
7 7
  1

 

 

 

 

 

 

 

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

 = `(21)/(10)`

= 2.1

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 4.2 | Page 51
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