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# The square root of 800 is between which of the following integers? A.

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Senior RC Moderator
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The square root of 800 is between which of the following integers? A.  [#permalink]

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31 Mar 2019, 09:29
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Difficulty:

35% (medium)

Question Stats:

80% (01:01) correct 20% (00:53) wrong based on 10 sessions

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The square root of 800 is between which of the following integers?

A. 21 and 25
B. 24 and 28
C. 27 and 31
D. 30 and 34
E. 33 and 37

Source: McGraw-Hill's GMAT

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Re: The square root of 800 is between which of the following integers? A.  [#permalink]

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31 Mar 2019, 09:44
$$\sqrt{800}$$ = $$\sqrt{400*2}$$ = $$20\sqrt{2}$$ = $$20*1.414$$ = $$20*\frac{14.1}{10}$$ = 28.2

So $$\sqrt{800}$$ is between 27 and 31.

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Re: The square root of 800 is between which of the following integers? A.  [#permalink]

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31 Mar 2019, 09:53
The square root of 800 is between which of the following integers?

A. 21 and 25
B. 24 and 28
C. 27 and 31
D. 30 and 34
E. 33 and 37

Source: McGraw-Hill's GMAT

300= 20√2 = ~ 28
IMO C
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Re: The square root of 800 is between which of the following integers? A.   [#permalink] 31 Mar 2019, 09:53
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