IndiaBIX.com
Arithmetic Aptitude Data Interpretation
Logical Reasoning Verbal Reasoning Non Verbal Reasoning
General Knowledge
Sudoku Number puzzles Missing letters puzzles Logical puzzles Playing cards puzzles Clock puzzles
C Programming C# Programming Java Programming
Networking Database Questions Computer Science Basic Electronics Digital Electronics Electronic Devices Circuit Simulation Electrical Enigneering Engineering Mechanics Technical Drawing
Placement Papers Group Disucssion HR Interview Technical Interview Body Language
Aptitude Test Verbal Ability Test Verbal Reasoning Test Logical Reasoning Test C Programming Test Java Programming Test Data Interpretation Test General Knowledge Test
Data Structures Operating Systems Networking DATABASE Database Basics SQL Server Basics SQL Server Advanced SQL Server 2008 JAVA Core Java Java Basics Advanced Java UNIX Unix File Management Unix Memory Management Unix Process Managemnt C Interview Questions The C Language Basics .NET Interview Questions .NET Framework ADO.NET ASP.NET Software Testing

Aptitude - Volume and Surface Area - Discussion

@ : Home > Aptitude > Volume and Surface Area > General Questions - Discussion

Read more:

"Loneliness is the most terrible poverty."
- Mother Teresa
3. 

A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of the hall is:

[A]. 720[B]. 900
[C]. 1200[D]. 1800

Answer: Option E

Explanation:

2(15 + 12) x h = 2(15 x 12)

h = 180 m = 20 m.
27 3

Volume = 15 x 12 x 20 m3 = 1200 m3.
3

Gopal said: (Tue, Mar 15, 2011 08:18:49 AM)    
 
I can not understand the meaning of cube in answer.
Shahid said: (Mon, May 23, 2011 06:14:52 AM)    
 
Here given that

Area of four walls = (area of the base )+(area of ceiling)

As per Surface area of a cuboid we have 2(l+b)*h
Area of base is (l*b)

So from these 2 formula e we get the equation explained in the answer section
Akanksha said: (Thu, Jun 16, 2011 12:59:18 PM)    
 
What is ceiling?
Yuri said: (Sat, Jun 25, 2011 12:26:24 PM)    
 
@ akansha ceiling means top wall, and hence its area is always equal to floor.
Ajith Kumar said: (Tue, Jul 19, 2011 11:52:32 AM)    
 
Well not exactly. A ceiling is an overhead interior surface of a room that conceals the underside of the floor or roof structure above.
Reshma said: (Wed, Sep 28, 2011 08:56:26 PM)    
 
Hello all,

I could not understand the first step of the explanation.

According to this site surface area of cuboid is 2 (lb + bh + lh) sq. units.
Yogarajan said: (Wed, Dec 14, 2011 12:44:37 AM)    
 
Hello, can any one clearly explain the basics of the concept please ?
Summi said: (Mon, Jan 9, 2012 04:03:17 PM)    
 
Hey can any one explain how you got 180/27cm ?
Geethu said: (Wed, Jan 18, 2012 10:43:19 PM)    
 
2(15*12)=2(lh+bh)
=2h(l+b)
15*12 = h(15+12)
h=(15*12)/(15+12)=180/27
Sreelakshmi said: (Thu, Feb 2, 2012 09:52:04 PM)    
 
Please explain this concept with proper steps.
Jordan said: (Wed, Feb 8, 2012 12:04:38 PM)    
 
Here given that

Area of four walls = (area of the base )+(area of ceiling)

Area of base is (l*b)
Area of ceiling is (l*b)
so (area of the base )+(area of ceiling)=2(l*b)

As per Surface area of a cuboid we have 2(l+b)*h
Area of four walls=2(l+b)*h
Jordan said: (Wed, Feb 8, 2012 01:04:27 PM)    
 
Here given that

Area of four walls = (area of the base )+(area of ceiling)

Area of base is (l*b)
Area of ceiling is (l*b)
so (area of the base )+(area of ceiling)=2(l*b)

As per Surface area of a cuboid we have 2(l+b)*h
Area of four walls=2(l+b)*h
Write your comments here:
Name *:     Email:

Read more:

© 2008-2011 by IndiaBIX™ Technologies. All Rights Reserved | Copyright | Terms of Use & Privacy Policy

Advertise     Contact us: info@indiabix.com     Follow us on twitter!