Volume of Cube : GMAT Data Sufficiency (DS)

Volume of Cube

Oldest

Best Reply

Author

Message

TAGS:

Manager

Joined: 06 Feb 2010

Posts: 102

Schools: University of Dhaka - Class of 2010

GPA: 3.63

WE: Business Development (Consumer Products)

Followers: 22

Kudos [?]: 360 [0], given: 152

Volume of Cube [#permalink]

26 Oct 2010, 09:07

00:00

Question Stats:

100% (00:00) correct

0% (00:00) wrong

based on 2 sessions

How to solve stm 2?

[Reveal] Spoiler: OA

Attachments

1026203817.jpg [ 224.64 KiB | Viewed 1854 times ]

_________________

Practice Makes a Man Perpect....Practice. Practice. Practice......Perfectly

Critical Reasoning: best-critical-reasoning-shortcuts-notes-tips-91280.html

Collections of MGMAT CAT: collections-of-mgmat-cat-math-152750.html

MGMAT SC SUMMARY: mgmat-sc-summary-of-fourth-edition-152753.html

Sentence Correction: sentence-correction-strategies-and-notes-91218.html

Arithmatic & Algebra: arithmatic-algebra-93678.html

Helpful Geometry formula sheet: best-geometry-93676.html

I hope these will help to understand the basic concepts & strategies. Please Click ON KUDOS Button.

Manager

Joined: 08 Sep 2010

Posts: 241

Location: India

WE 1: 6 Year, Telecom(GSM)

Followers: 3

Kudos [?]: 39 [0], given: 21

Re: Volume of Cube [#permalink]

26 Oct 2010, 09:19

For volume of a cube ,we need to know the side of the cube as Volume of the cube is l^3 where l is side of the cube.

From (1)surface area is given means 6l^2 is given which is sufficient to get the value of l^3
From(2) length of diagonal l*sqrt(3) is given which is sufficient to get the value of l^3

Hence answer is D.

Consider giving KUDOS if it is helpful to u.

Last edited by ankitranjan on 26 Oct 2010, 09:37, edited 2 times in total.

GMAT Club team member

Joined: 02 Sep 2009

Posts: 12116

Followers: 1879

Kudos [?]: 10129 [0], given: 965

Re: Volume of Cube [#permalink]

26 Oct 2010, 09:28

What is the volume of the cube above?

Let the sid of a cube be x, then the volume will be volume=x^3

(1) The surface area of the cube is 600 square inches --> surface area of a cube equals to {area of a face} * {# of faces} --> surface \ area=x^2*6=600, --> x=10--> volume=x^3=1,000. Sufficient.

(2) The length of diagonal AB is 10\sqrt{3} inches --> diagonal of a cube equals to Diagonal=\sqrt{x^2+x^2+x^2}=x\sqrt{3}=10\sqrt{3} (x^2+x^2=square of a diagonal of a face and square of a diagonal of a face plus square of a side equals to diagonal of a cube) --> x=10--> volume=x^3=1,000. Sufficient.

Answer: D.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders

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. NEW!!! ,11 Mixed Questions NEW!!!, 12 Fresh Meat NEW!!!

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. NEW!!!, 11 New DS set. NEW!!!

What are GMAT Club Tests?
25 extra-hard Quant Tests

Find out what's new at GMAT Club - latest features and updates

Re: Volume of Cube [#permalink] 26 Oct 2010, 09:28

		Similar topics	Author	Replies	Last post
Similar Topics:		What is the volume of a certain cube? 1) The cube has a	sudhagar	7	03 Nov 2005, 10:13
		If the volume of cube A is twice that of cube B, the side of	jimmyjamesdonkey	6	22 Jul 2007, 09:51
		What is the volume of the cube ? (1) The surface area of the	Jcpenny	1	05 Nov 2008, 22:19
	1	Cube Volume Question/Triange Area	zeppelin	2	03 Jul 2009, 10:49
		What is the volume of a cube with edge e? (1) The value of	rxs0005	2	26 Nov 2010, 07:24

Volume of Cube

Main navigation

GMAT Resources

Partners

MBA Resources

GMAT ® is a registered trademark of the Graduate Management Admission Council ® (GMAC ®). GMAT Club's website has not been reviewed or endorsed by GMAC.

GMAT Courses

Admissions Consulting

Volume of Cube

Volume of Cube

Main navigation

GMAT Resources

Partners

MBA Resources