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प्रश्न
If `sqrt784` = 28, find the value of:
`sqrt(7.84) + sqrt(78400)`
उत्तर
`sqrt784` = 28
∴ `sqrt7.84 = sqrt(784/100) = 28/10 = 2.8`
`sqrt78400 = sqrt(28 xx 28 xx 10 xx 10)`
= 28 × 10 = 280
`sqrt7.84 + sqrt78400 = 2.8 + 280 = 282.8`
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