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.
the total surface area of this cylinder
[#permalink]
27 Aug 2022, 04:00
27 Aug 2022, 04:00
Expert Reply
00:00
Question Stats:
80% (01:29) correct
20% (01:10) wrong based on 15 sessions
Hide Show timer Statistics
Attachment:
GRE prwep club geomytery challenge.jpg [ 10.19 KiB | Viewed 1612 times ]
Quantity A |
Quantity B |
the total surface area of this cylinder |
the total surface area of a cube with edges e = 9 cm |
A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Part of the project: GRE Quantitative Comparison GEOMETRY+Tricky Questions - Special Summer Edition (2022)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials (2022)
GRE Geometry Formulas
GRE - Math Book
Re: the total surface area of this cylinder
[#permalink]
27 Aug 2022, 04:19
27 Aug 2022, 04:19
1
TSA of cylinder with radius r = 7 and height h = 8 is equal to 2*(pi)r^2 + 2(pi)rh
Hence, Option A= 2(pi)49 + 2(pi)56= 2(pi)*105 = 210(pi) = 210*3.14 which is greater than 630
Option B on the other hand is TSA of a cube with edge length l = 9 which is calculated by 6*(L^2)= 6*81 = 486
As option A > option B, the answer is Option A.
Hence, Option A= 2(pi)49 + 2(pi)56= 2(pi)*105 = 210(pi) = 210*3.14 which is greater than 630
Option B on the other hand is TSA of a cube with edge length l = 9 which is calculated by 6*(L^2)= 6*81 = 486
As option A > option B, the answer is Option A.
gmatclubot
Re: the total surface area of this cylinder [#permalink]
27 Aug 2022, 04:19
Moderators:
