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If a square parking lot has an area of z, what is the longes

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If a square parking lot has an area of z, what is the longes [#permalink] New post 19 May 2018, 07:05
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If a square parking lot has an area of z, what is the longest distance on a straight line that a car could drive on the lot?

A. \(z\)

B. \(\sqrt{2z}\)

C. \(2 \sqrt{z}\)

D. \(z \sqrt{2}\)

E. \(2z\)
[Reveal] Spoiler: OA

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Last edited by Carcass on 20 May 2018, 09:59, edited 1 time in total.
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Re: If a square parking lot has an area of z, what is the longes [#permalink] New post 19 May 2018, 09:34
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Root over 2*z should be the answer which is not given in the options. Area of the square is z which implies the side is root over z. Longest straight line inside square is its diagonal which is root over 2*side.

So on solving , we get the solution which is not given in the options.
Founder
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Joined: 18 Apr 2015
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GRE 1: Q160 V160
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Re: If a square parking lot has an area of z, what is the longes [#permalink] New post 20 May 2018, 10:00
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yes, you right. Edited option B.

Thank you so much.

Regards
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Re: If a square parking lot has an area of z, what is the longes   [#permalink] 20 May 2018, 10:00
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