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Evaluate 145×142144×2755 - Mathematics

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Question

Evaluate `sqrt(1 4/5 xx 14 21/44 xx 2 7/55)`

Sum

Solution

`sqrt(1 4/5 xx 14 21/44 xx 2 7/55)`

= `sqrt(9/5 xx 637/44 xx 117/55)`

= `sqrt((9 xx 637 xx 117)/(5 xx 44 xx 55)`

= `sqrt((9 xx 7 xx 7 xx 13 xx 13 xx 9)/(5 xx 11 xx 2 xx2 xx 11 xx 55)`

7 637
7 91
  13

 

 

 

 

9 117
  13

 

 

 

= `(9 xx 7 xx 13)/(5 xx 11 xx 2)`

= `(819)/(110)`

= `7 (49)/(110)`

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Chapter 3: Squares and Square Root - Exercise 3 (A) [Page 38]

APPEARS IN

Selina Concise Mathematics [English] Class 8 ICSE
Chapter 3 Squares and Square Root
Exercise 3 (A) | Q 6.4 | Page 38
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