Last visit was: 27 Dec 2024, 23:43 It is currently 27 Dec 2024, 23:43
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

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

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 GRE 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.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
PREVIOUS TOPIC
NEXT TOPIC

Jane has to paint a cylindrical column that is 14 feet high and that

Tags :
Find Similar Topics  About  Add a Tag

Show Tags
Hide Tags

User avatar
D
GeminiHeat
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Own Kudos [?]: 3679 [1]
Given Kudos: 1053
GPA: 3.39
Send PM
Jane has to paint a cylindrical column that is 14 feet high and that [#permalink] New post   05 Mar 2021, 06:45
1
Expert Reply
00:00

Question Stats:

50% (00:53) correct 50% (01:54) wrong based on 2 sessions

Hide Show timer Statistics

Jane has to paint a cylindrical column that is 14 feet high and that has a circular base with a radius of 3 feet. If one bucket of paint will cover \(10π\) square feet, how many whole buckets does Jane need to buy in order to paint the column, including the top and bottom?

A. 8 buckets

B. 9 buckets

C. 10 buckets

D. 11 buckets

E. 12 buckets
ShowHide Answer
Official Answer
D
User avatar
D
KarunMendiratta
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Own Kudos [?]: 3273 [1]
Given Kudos: 172
Location: India
WE:Education (Education)
Send PM
Re: Jane has to paint a cylindrical column that is 14 feet high and that [#permalink] New post   05 Mar 2021, 08:37
1
GeminiHeat wrote:
Jane has to paint a cylindrical column that is 14 feet high and that has a circular base with a radius of 3 feet. If one bucket of paint will cover \(10π\) square feet, how many whole buckets does Jane need to buy in order to paint the column, including the top and bottom?

A. 8 buckets

B. 9 buckets

C. 10 buckets

D. 11 buckets

E. 12 buckets


The question requires Jane to paint the column, so we will use T.S.A

T.S.A of cylinder = \(2πr(H+r) = 2π(3)[14+3] = 102π\)

Now, each bucket can be used to paint \(10π\) of cylinder
Therefore, number of buckets required = \(\frac{102π}{10π} = 10.2 = 11\) buckets

Hence, option D

NOTE: We will require at-least 10.2 buckets, 10 will not do the work and we cannot get buckets in fractions, so 11
Prep Club for GRE Bot
gmatclubot
Re: Jane has to paint a cylindrical column that is 14 feet high and that [#permalink]
05 Mar 2021, 08:37
Moderators:
adewale223
GRE Instructor
88 posts
bronaugust
GRE Forum Moderator
37 posts
BrushMyQuant
Moderator
1116 posts
VibhuAnurag
GRE Instructor
234 posts

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

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | Prep Club for GRE Rules | Contact