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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 8

Evaluate: 286225 and use it to compute 2862.25+28.6225 - Mathematics

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Question

Evaluate: `sqrt(286225)` and use it to compute `sqrt(2862.25) + sqrt(28.6225)`

Sum

Solution


∴ `sqrt(286225)` = 535

`sqrt(2862.25) = sqrt(286225/100)`

= `sqrt(286225/100)`

= `535/10`

= 53.5

`sqrt(28.6225) = sqrt(286225/1000)`

= `sqrt(286225/10000)`

= `535/100`

= 5.35

53.5
  5.35
58.85

∴ `sqrt(2862.25) + sqrt(28.6225)` = 53.5 + 5.35

= 58.85

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Finding the Square Root of a Perfect Square
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Chapter 1: Numbers - Exercise 1.7 [Page 47]

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Samacheer Kalvi Mathematics [English] Class 8 TN Board
Chapter 1 Numbers
Exercise 1.7 | Q 18 | Page 47
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