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A square region has an area of b square inches and a perimet
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24 Feb 2020, 12:36
24 Feb 2020, 12:36
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A square region has an area of b square inches and a perimeter of n inches. If \(n=\frac{b}{3}\) what is the length, in inches, of the side of the square?
A. 12
B. \(12 \sqrt{2}\)
C. 48
D. \(48 \sqrt{3}\)
E. 144
Kudos for the right answer and explanation
A. 12
B. \(12 \sqrt{2}\)
C. 48
D. \(48 \sqrt{3}\)
E. 144
Kudos for the right answer and explanation
Re: A square region has an area of b square inches and a perimet
[#permalink]
02 Aug 2020, 09:20
02 Aug 2020, 09:20
2
Let side of square be 's'
so area is S^2 = B (square inches)
4s = n
and n = B/3
so 4s = s^2/3 [subsituting]
s = 12
Hence A.
the trick is to realize B is a unit not a B^2 [I found this tricky! and kept getting b removed the equation]
Kudos if you like this explanation
so area is S^2 = B (square inches)
4s = n
and n = B/3
so 4s = s^2/3 [subsituting]
s = 12
Hence A.
the trick is to realize B is a unit not a B^2 [I found this tricky! and kept getting b removed the equation]
Kudos if you like this explanation
Re: A square region has an area of b square inches and a perimet
[#permalink]
05 Jan 2022, 06:09
05 Jan 2022, 06:09
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
