The square root of fraction 20 over 25:
= √20
...√25
= √4(5)
......5
= 2√5
.....5
or 2 square root of 5 over 5
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square root(20) over 36 = 0.124225999
No.
Yes because it can't be expressed as an exact fraction
If it's just the square root of x, and that is over 20, you're looking for x=100. Here's why: 1/2 is one half. What number is 1/2 of 20? 10, right? What number has a square root that equals 10? 100! So~ the square root of 100 is 10. 10 out of 20 is equal to 1 out of 2.
It is 2*sqrt(5).