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

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

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New post 31 Mar 2019, 09:29
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A
B
C
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Difficulty:

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Question Stats:

73% (01:03) correct 27% (00:59) wrong based on 41 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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New post 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.

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

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New post 31 Mar 2019, 09:53
SajjadAhmad wrote:
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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The square root of 800 is between which of the following integers? A.

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