The square root of 50 is 7.0711 (correct to four places of decimals), and twice it is 14.1421
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No - a natural number is a whole number. Therefore, the square root of 49 is a natural number, but the square root of 50 is not.
The square root of 2 plus the square root of 2 is equal to twice the square root of 2, therefore the correct answer is: 2(√2) or √8
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Square root of 2 = 1.414213562... Square root of 7 = 2.645751311... The sum is 4.059964873...