No.
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The square root of 5 is approximately 2.236. It is an irrational number meaning we can not calculate its value no matter how many digits we can find. At one point a NASA computer was used to calculate the first million digits of the number.
Yes. The square root of a natural number (positive integer) is either an integer, or an irrational number.
Irrational numbers are those that cannot be represented by a simple fraction, whereby the digits after the decimal point are neither repeating or terminating.For example:The value of pi:3.1415926535897932384626433832795....The square root of 2 (√2):1.4142135623730950488016887242096....The square root of 3 (√3):1.7320508075688772935274463415059....The square root of 5 (√5):2.2360679774997896964091736687313....The square root of 6 (√6):2.4494897427831780981972840747059....
The square root of 25 is 5.
square root of 20 = square root of 4 * square root of 5. square root of 4 = 2, so your answer is 2 square root of 5.