Last visit was: 11 Sep 2024, 09:34 It is currently 11 Sep 2024, 09:34
Toolkit
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

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.

# What is the total surface area of rectangular solid R ?

SORT BY:
Tags:
Show Tags
Hide Tags
Manager
Joined: 27 Feb 2010
Posts: 54
Own Kudos [?]: 2217 [6]
Given Kudos: 14
Location: Denver
Manager
Joined: 24 Jul 2009
Posts: 155
Own Kudos [?]: 501 [0]
Given Kudos: 0
Intern
Joined: 20 Feb 2009
Posts: 35
Own Kudos [?]: 125 [0]
Given Kudos: 0
Location: chennai
Concentration: general
Intern
Joined: 22 Dec 2009
Posts: 26
Own Kudos [?]: 577 [0]
Given Kudos: 13
Re: What is the total surface area of rectange solid R? [#permalink]
I have one question to above explanation,
since it is Solid triangular, we need to know the heigh of this solid right in order to find total surface area..?!

Just like when you have to compute the surface area of cylinder

Intern
Joined: 03 Feb 2010
Posts: 4
Own Kudos [?]: 4 [0]
Given Kudos: 1
Location: India
Concentration: International Business, Human Resource
Schools:LSB, NSU
Re: What is the total surface area of rectange solid R? [#permalink]
Solid rectangular just implies that its a 3D object and not a plain rect drawn on paper but its area can be calulated just like any other plain rectangle.

For rectangular surface are, we simply need the 2 sides - length and breadth.
Surface area = area of 2 square faces + 4 rectangular faces.
There is nothing like height of a rectangle, you can put it on either face and the standing side becomes the height

In cyliner we have 2 circular faces + a rolled over part. To get the area od this rolled part we need the height.
VP
Joined: 06 Sep 2013
Posts: 1332
Own Kudos [?]: 2487 [0]
Given Kudos: 355
Concentration: Finance
Re: What is the total surface area of rectange solid R? 1) The [#permalink]
OA/OE please? I'm pretty confident the answer is straight E

Cheers!
J
Math Expert
Joined: 02 Sep 2009
Posts: 95451
Own Kudos [?]: 657654 [0]
Given Kudos: 87242
Re: What is the total surface area of rectange solid R? 1) The [#permalink]
jlgdr wrote:
OA/OE please? I'm pretty confident the answer is straight E

Cheers!
J

What is the total surface area of rectangular solid R ?

(1) The surface area of one of the faces of R is 48. Clearly insufficient.

(2) The length of one of the edges is 3. Clearly insufficient.

(1)+(2) The dimensions can be 3 to 16 to {any} or x to y to 3, (where x*y=48). Not sufficient. Also, notice that the edge of length 3 could be one of the sides of the face whose area is 48 as well as one of the sides of one of the other faces.

Manager
Joined: 06 Oct 2015
Posts: 67
Own Kudos [?]: 115 [0]
Given Kudos: 73
Re: What is the total surface area of rectangular solid R ? [#permalink]
I am little bit skeptical whether rectangle can be square. Guys, help me, please?
Board of Directors
Joined: 18 Jul 2015
Status:Emory Goizueta Alum
Posts: 3593
Own Kudos [?]: 5511 [0]
Given Kudos: 346
Re: What is the total surface area of rectangular solid R ? [#permalink]
NaeemHasan wrote:
I am little bit skeptical whether rectangle can be square. Guys, help me, please?

What do you mean by Rectangle can be a square. There is nothing of that sort given in the question nor can we deduce that.
Manager
Joined: 06 Oct 2015
Posts: 67
Own Kudos [?]: 115 [0]
Given Kudos: 73
Re: What is the total surface area of rectangular solid R ? [#permalink]
abhimahna wrote:
NaeemHasan wrote:
I am little bit skeptical whether rectangle can be square. Guys, help me, please?

What do you mean by Rectangle can be a square. There is nothing of that sort given in the question nor can we deduce that.

I was just confused because Inaranayan wrote above about it.
Director
Joined: 26 Oct 2016
Posts: 506
Own Kudos [?]: 3422 [3]
Given Kudos: 877
Location: United States
Concentration: Marketing, International Business
Schools: HBS '19
GMAT 1: 770 Q51 V44
GPA: 4
WE:Education (Education)
Re: What is the total surface area of rectangular solid R ? [#permalink]
3
Kudos
The surface area of a rectangular solid is found out by adding the area of each of the six faces. For finding out the surface area we need to know the width (w), height (h), and length (l) (Note that in case of a cube w,l,h are equal). The surface area is given as 2(w*h+h*l+w*l)

In the first statement we have that the area of one of the faces is 48. Then the area opposite to this face will also have an area of 48. But this gives us the area of only 2 of the faces (or one pair of equal faces, where as a rectangular solid has 3 pairs of equal faces) and we have no clue about the other 4 faces. So this statement is not sufficient.

The second statement says that the length of one of the edges is 3. This could be the value of w,h,l. But to find out the value of the surface area we need all the 3 values hence this statement is also insufficient.

Now, even when we combine the 2 statements we see that though we know the surface area of one of the faces and one of the lengths, we still dont know whether the length is the length of w,h,l . With the help of the given information we can find the length of one more length as 48 =3 * w or 3*h or 3*l. We still wont get the value of all the length and hence wont be able to find out the surface area. Hence the answer is E.
Non-Human User
Joined: 09 Sep 2013
Posts: 34813
Own Kudos [?]: 876 [0]
Given Kudos: 0
Re: What is the total surface area of rectangular solid R ? [#permalink]
Hello from the GMAT Club BumpBot!

Thanks to another GMAT 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.
Re: What is the total surface area of rectangular solid R ? [#permalink]
Moderator:
Math Expert
95451 posts