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प्रश्न
Find the square root of the following decimal numbers and fractions
`7 18/49`
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उत्तर
`7 18/49 = sqrt(361/49)`
= `sqrt(361)/sqrt(49)`
= `sqrt(19^2)/sqrt(7^2)`
= `19/7 ...[because sqrt("a"/"b") = sqrt("a")/sqrt("b") ("b" ≠ 0)]`
= `19/7`
= `2 5/7`
49 ×
7
343 +
18
361
`sqrt(7 18/49) = 2 5/7`
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