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What is the value of a ?
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13 Sep 2019, 10:24
13 Sep 2019, 10:24
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Question Stats:
100% (01:07) correct
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What is the value of a ?
A. 4
B. \(2 \sqrt{6}\)
C. \(4 \sqrt{6}\)
D. 6
E 24
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Joined: 02 Jan 2020
Status:GRE Quant Tutor
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Given Kudos: 9
Location: India
Concentration: General Management
Schools: XLRI Jamshedpur, India - Class of 2014
GMAT 1: 700 Q51 V31
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WE:Engineering (Computer Software)
Re: What is the value of a ?
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07 Jun 2020, 01:28
07 Jun 2020, 01:28
1
[Refer attached Image]
We need to find the length of side AC = a
ABC is a right angled triangle right angled at A
Applying Pythagoras theorem we have
\(BC^2\) = \(AB^2\) + \(AC^2\)
\((4+3)^2\) = \(5^2\) + \(a^2\)
\(a^2\) = 49 - 25 = 24 = \(6*2^2\)
=> a = \(2\sqrt{6}\)
So, Answer will be B
Hope it helps!
We need to find the length of side AC = a
ABC is a right angled triangle right angled at A
Applying Pythagoras theorem we have
\(BC^2\) = \(AB^2\) + \(AC^2\)
\((4+3)^2\) = \(5^2\) + \(a^2\)
\(a^2\) = 49 - 25 = 24 = \(6*2^2\)
=> a = \(2\sqrt{6}\)
So, Answer will be B
Hope it helps!
Attachments
image-3.jpg [ 25.02 KiB | Viewed 1434 times ]
gmatclubot
Re: What is the value of a ? [#permalink]
07 Jun 2020, 01:28
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