GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
If a cube has the same volume (in cubic units) as surface ar
[#permalink]
14 Sep 2018, 16:33
14 Sep 2018, 16:33
Expert Reply
00:00
Question Stats:
85% (00:30) correct
14% (01:54) wrong based on 41 sessions
Hide Show timer Statistics
If a cube has the same volume (in cubic units) as surface area (in square units), what is the length of one side?
(A) \(1\)
(B) \(3\)
(C) \(\frac{5}{3}\)
(D) \(6\)
(E) No such cube is possible
(A) \(1\)
(B) \(3\)
(C) \(\frac{5}{3}\)
(D) \(6\)
(E) No such cube is possible
Re: If a cube has the same volume (in cubic units) as surface ar
[#permalink]
11 Apr 2020, 10:28
11 Apr 2020, 10:28
Expert Reply
Volume of cube = \(a^3\)
Surface area of cube = \(6a^2\).
\(a^3 = 6a^2\)
\(a^3 - 6a^2 = 0\)
\(a^2 *(a - 6) = 0\)
\(a =0 or a =6\).
\(a= 0\) not possible.
Hence \(a = 6\) is the ans.
Answer - D
Surface area of cube = \(6a^2\).
\(a^3 = 6a^2\)
\(a^3 - 6a^2 = 0\)
\(a^2 *(a - 6) = 0\)
\(a =0 or a =6\).
\(a= 0\) not possible.
Hence \(a = 6\) is the ans.
Answer - D
gmatclubot
Re: If a cube has the same volume (in cubic units) as surface ar [#permalink]
11 Apr 2020, 10:28
Moderators:
