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03 Dec 2018, 04:24
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B
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Difficulty:
15%
(low)
Question Stats:
85% (00:48) correct
15%
(00:52)
wrong
based on 40
sessions
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Not Attempted Yet
What is the length of a diagonal of a rectangle that has width 5 and perimeter 34 ?
A. 12
B. 13
C. 25
D. 26
E. 27
A. 12
B. 13
C. 25
D. 26
E. 27
Archit3110
Major Poster
Updated on: 03 Dec 2018, 05:16
Originally posted by Archit3110 on 03 Dec 2018, 05:11.
Last edited by Archit3110 on 03 Dec 2018, 05:16, edited 1 time in total.
Last edited by Archit3110 on 03 Dec 2018, 05:16, edited 1 time in total.
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Bunuel
2(l+B)=34
b=5
2L+10=34
l=12
Diagnoal would be 5:12:13
IMO B
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03 Dec 2018, 05:14
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Bunuel
Perimeter of rectangle \(= 2l + 2w\)
Given width \(= 5\)
Perimeter \(= 34\)
\(2l + 2w = 34\)
\(2l + 2*5 = 34\)
\(2l + 10 = 34\)
\(2l = 34 - 10 = 24\)
\(l = \frac{24}{2} = 12\)
Diagonal \(= \sqrt{w^2+l^2}\)
\(= \sqrt{5^2+12^2}\)
\(= \sqrt{25+144}\)
\(= \sqrt{169}\)
Diagonal \(= 13\)
Answer B
