It is currently 23 Sep 2017, 09:42

Happening Now:

Alleviate MBA app anxiety! Come to Chat Room #2


Close

GMAT 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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

What is the ratio of the surface area of a cube to the surfa

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

1 KUDOS received
SVP
SVP
avatar
Joined: 04 May 2006
Posts: 1890

Kudos [?]: 1353 [1], given: 1

Schools: CBS, Kellogg
Premium Member
What is the ratio of the surface area of a cube to the surfa [#permalink]

Show Tags

New post 04 Mar 2008, 00:26
1
This post received
KUDOS
7
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

54% (00:47) correct 46% (00:39) wrong based on 234 sessions

HideShow timer Statistics

What is the ratio of the surface area of a cube to the surface area of a rectangular solid identical to the cube in all ways except that its length has been doubled?

A. 1/4
B. 3/8
C. 1/2
D. 3/5
E. 2

OPEN DISCUSSION OF THIS QUESTION IS HERE: what-is-the-ratio-of-the-surface-area-of-a-cube-to-the-surfa-127459.html
[Reveal] Spoiler: OA

_________________

GMAT Club Premium Membership - big benefits and savings


Last edited by Bunuel on 27 Mar 2014, 01:08, edited 1 time in total.
Renamed the topic, edited the question, added the OA and moved to PS forum.

Kudos [?]: 1353 [1], given: 1

1 KUDOS received
Manager
Manager
avatar
Joined: 31 Oct 2007
Posts: 112

Kudos [?]: 72 [1], given: 0

Location: Frankfurt, Germany
Re: MC1- Q26 [#permalink]

Show Tags

New post 05 Mar 2008, 21:41
1
This post received
KUDOS
1
This post was
BOOKMARKED
One side surface area of a cube = x*x = x^2
Total 6 sides = 6x^2

As for the rectangular, Height (H) and Width (W) are same as Cube, x. Only Length = 2x.
L x H = 2x * x = 2x^2 ----> 4 sides = 2x^2 * 4 = 8x^2
W * H = x * x = x^2 ------> 2 sides = x^2 * 2 = 2x^2
Total 6 sides = 8x^2 + 2x^2 = 10x^2

Ratio of cube area to rectangular area = 6x^2 / 10x^2 ----> 6/10 ----> 3/5 (E)
_________________

Jimmy Low, Frankfurt, Germany
Blog: http://mytrainmaster.wordpress.com
GMAT Malaysia: http://gmatmalaysia.blogspot.com

Kudos [?]: 72 [1], given: 0

Manager
Manager
User avatar
B
Joined: 14 Jan 2013
Posts: 153

Kudos [?]: 352 [0], given: 30

Concentration: Strategy, Technology
GMAT Date: 08-01-2013
GPA: 3.7
WE: Consulting (Consulting)
Re: What is the ratio of the surface area of a cube to the [#permalink]

Show Tags

New post 26 Mar 2014, 17:01
Opening this old thread...


Guys,

Can some one draw this for me....

Thanks in adv

~M14
_________________

"Where are my Kudos" ............ Good Question = kudos

"Start enjoying all phases" & all Sections

__________________________________________________________________
http://gmatclub.com/forum/collection-of-articles-on-critical-reasoning-159959.html

http://gmatclub.com/forum/percentages-700-800-level-questions-130588.html

http://gmatclub.com/forum/700-to-800-level-quant-question-with-detail-soluition-143321.html

Kudos [?]: 352 [0], given: 30

Expert Post
2 KUDOS received
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 41698

Kudos [?]: 124613 [2], given: 12079

Re: What is the ratio of the surface area of a cube to the [#permalink]

Show Tags

New post 27 Mar 2014, 01:10
2
This post received
KUDOS
Expert's post
2
This post was
BOOKMARKED
Mountain14 wrote:
Opening this old thread...


Guys,

Can some one draw this for me....

Thanks in adv

~M14


What is the ratio of the surface area of a cube to the surface area of a rectangular solid identical to the cube in all ways except that its length has been doubled?

A. 1/4
B. 3/8
C. 1/2
D. 3/5
E. 2

30 second approach:
A cube has 6 faces, suppose each has an area of 1, so surface area of the cube will be 6;

A rectangular solid identical to the cube in all ways except that its length has been doubled is just complicated way of saying that the rectangular solid is built with two cubes, hence it has 4+4+2=10 faces of a little cube (just imagine to cubes put one on another) and thus the surface area of the rectangular solid will be 10;

Ratio: 6/10=3/5.

Answer: D.

OPEN DISCUSSION OF THIS QUESTION IS HERE: what-is-the-ratio-of-the-surface-area-of-a-cube-to-the-surfa-127459.html
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Kudos [?]: 124613 [2], given: 12079

Re: What is the ratio of the surface area of a cube to the   [#permalink] 27 Mar 2014, 01:10
    Similar topics Author Replies Last post
Similar
Topics:
1 EXPERTS_POSTS_IN_THIS_TOPIC If a cube has a volume of 64, what is its total surface area?? carcass 5 14 Jul 2017, 10:41
2 EXPERTS_POSTS_IN_THIS_TOPIC If the surface area of a certain cube is 2400, what is its volume? Bunuel 4 20 Jan 2017, 09:03
2 EXPERTS_POSTS_IN_THIS_TOPIC What is the surface area of a cube whose edges measure (1/6)? Bunuel 3 16 Nov 2016, 07:32
EXPERTS_POSTS_IN_THIS_TOPIC If a cube has a volume of 125, what is the surface area of one side? Bunuel 2 09 Sep 2016, 03:55
14 EXPERTS_POSTS_IN_THIS_TOPIC What is the ratio of the surface area of a cube to the surfa enigma123 15 28 Feb 2017, 18:45
Display posts from previous: Sort by

What is the ratio of the surface area of a cube to the surfa

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.