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The square root of 306.25 is exactly

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The square root of 306.25 is exactly  [#permalink]

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New post 04 Mar 2018, 23:00
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Re: The square root of 306.25 is exactly  [#permalink]

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New post 04 Mar 2018, 23:00
Bunuel wrote:
The square root of 306.25 is exactly

(A) 0.175

(B) 1.75

(C) 17.5

(D) 175

(E) 1750


8. Exponents and Roots of Numbers



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The square root of 306.25 is exactly  [#permalink]

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New post 05 Mar 2018, 00:38
Bunuel wrote:
The square root of 306.25 is exactly

(A) 0.175

(B) 1.75

(C) 17.5

(D) 175

(E) 1750



\(17^2 = 289 | 18^2 = 324\)

Therefore, square root of 306.25 is in this range and is Option C(17.5)
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Re: The square root of 306.25 is exactly  [#permalink]

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New post 05 Mar 2018, 03:05
Bunuel wrote:
The square root of 306.25 is exactly

(A) 0.175

(B) 1.75

(C) 17.5

(D) 175

(E) 1750


17^2=289
18^2=324
Closest option =C
Answer C
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Re: The square root of 306.25 is exactly  [#permalink]

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New post 20 Mar 2018, 08:46
Bunuel wrote:
The square root of 306.25 is exactly

(A) 0.175

(B) 1.75

(C) 17.5

(D) 175

(E) 1750


Only answer choice C looks as A, B are too small and D, E are too big.

17 * 17 = 289 and 18 * 18 = 324

306.5 lies in between, therefore (C)
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Re: The square root of 306.25 is exactly   [#permalink] 20 Mar 2018, 08:46
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