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.
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
A cylindrical water tank has a diameter of 14 meters and a height of 2
[#permalink]
05 Mar 2021, 06:15
05 Mar 2021, 06:15
1
Expert Reply
2
Bookmarks
00:00
Question Stats:
70% (01:50) correct
29% (02:08) wrong based on 31 sessions
Hide Show timer Statistics
A cylindrical water tank has a diameter of 14 meters and a height of 20 meters. A water truck can fill π cubic meters of the tank every minute. How long in hours and minutes will it take the water truck to fill the water tank from empty to half full?
A. 4 hours and 10 minutes
B. 5 hours and 20 minutes
C. 6 hours and 30 minutes
D. 7 hours and 40 minutes
E. 8 hours and 10 minutes
A. 4 hours and 10 minutes
B. 5 hours and 20 minutes
C. 6 hours and 30 minutes
D. 7 hours and 40 minutes
E. 8 hours and 10 minutes
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Given Kudos: 172
Location: India
WE:Education (Education)
Re: A cylindrical water tank has a diameter of 14 meters and a height of 2
[#permalink]
05 Mar 2021, 08:50
05 Mar 2021, 08:50
3
GeminiHeat wrote:
A cylindrical water tank has a diameter of 14 meters and a height of 20 meters. A water truck can fill π cubic meters of the tank every minute. How long in hours and minutes will it take the water truck to fill the water tank from empty to half full?
A. 4 hours and 10 minutes
B. 5 hours and 20 minutes
C. 6 hours and 30 minutes
D. 7 hours and 40 minutes
E. 8 hours and 10 minutes
A. 4 hours and 10 minutes
B. 5 hours and 20 minutes
C. 6 hours and 30 minutes
D. 7 hours and 40 minutes
E. 8 hours and 10 minutes
Volume of cylinder = \(πr^2H\)
Volume to be filled = \(\frac{1}{2}πr^2H = \frac{1}{2}π(7^2)(20) = 490π\)\(ft^3\)
\(π\)\(ft^3\) can be filled in 1 minute
So, time required to fill \(490π\)\(ft^3\) = \(\frac{490π}{π} = 490\) minutes
490 minutes = \(\frac{490}{60} = 8.1667\) hours = 8 hours and 10 minutes
Hence, option E
Re: A cylindrical water tank has a diameter of 14 meters and a height of 2
[#permalink]
26 Jun 2024, 09:28
26 Jun 2024, 09:28
Hello from the GRE Prep Club BumpBot!
Thanks to another GRE Prep 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.
Thanks to another GRE Prep 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.
