How do you estimate a square roots

Explanation:

if you get a decimal round it by the...here lemme just show you. 35.8. round the 35 from like the 8 so it would be 36. square roots. radical then a 49. it would be 7 or -7. make any sense? 49 basically a same number the could times it's self to 49 like 7×7=49. hope that some what helped

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