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OpenStudy (anonymous):
Explain the process of how to estimate the square root of 21 to the nearst intger
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OpenStudy (dumbcow):
look at perfect squares 4^2 = 16 5^2 = 25 21 is closer to 25 than 16 , thus sqrt21 is closer to 5
OpenStudy (dumbcow):
oh crap this is 6 months old .... damn
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