Between which two integers is the value of the square root of 20

4 and 5

Step-by-step explanation:

20 is greater than 4² = 16, and less than 5² = 25. So, the square root of 20 is between 4 and 5.

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Your calculator will tell you that √20 ≈ 4.472, so is between 4 and 5.