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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

If 784 = 28, find the value of: 0.0784+0.000784 - Mathematics

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प्रश्न

If `sqrt784` = 28, find the value of:

`sqrt(0.0784) + sqrt(0.000784)`

बेरीज

उत्तर

`sqrt784 = 28`

∴ `sqrt 0.0784 = sqrt(784/10000) = 28/100 = 0.28`

and `sqrt0.000784 = sqrt(784/1000000)`

`= sqrt((28 xx 28)/(10xx10xx10xx 10xx10xx10))`

`= 28/(10 xx 10 xx 10)`

`= 28/1000 = 0.028`

Now,

`sqrt 0.0784 + sqrt0.000784`

= 0.28 + 0.028

= 0.308

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पाठ 3: Squares and Square Root - Exercise 3 (A) [पृष्ठ ३९]

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सेलिना Concise Mathematics [English] Class 8 ICSE
पाठ 3 Squares and Square Root
Exercise 3 (A) | Q 12.2 | पृष्ठ ३९
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