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02 Jul 2015, 01:35
Kudos
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D
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A cylindrical water tank has a diameter of 14 meters and a height of 20 meters. A water truck can fill \(\pi\) cubic meters of the tank every minute. How long will it take the water truck to fill the water tank from empty to half-full?
A. 140 minutes
B. 245 minutes
C. 280 minutes
D. 490 minutes
E. 980 minutes
Kudos for a correct solution.
A. 140 minutes
B. 245 minutes
C. 280 minutes
D. 490 minutes
E. 980 minutes
Kudos for a correct solution.
02 Jul 2015, 03:29
Kudos
Bookmarks
Bunuel
A cylindrical water tank has a diameter of 14 meters and a height of 20 meters. A water truck can fill \(\pi\) cubic meters of the tank every minute. How long will it take the water truck to fill the water tank from empty to half-full?
A. 140 minutes
B. 245 minutes
C. 280 minutes
D. 490 minutes
E. 980 minutes
Kudos for a correct solution.
A. 140 minutes
B. 245 minutes
C. 280 minutes
D. 490 minutes
E. 980 minutes
Kudos for a correct solution.
Diameter = 14
Height = 20
Volume = π*r^2*h = π (14/2)^2 * 20 = 980π
Total Time = Capacity to be filled / rate = (980π/2) / π = 490 Minutes
Answer: Option D
02 Jul 2015, 06:53
Kudos
Bookmarks
R * T = W
diameter = 14
height = 20
\(\pi * t = \frac{1}{2}*\frac{14}{2}*20*\pi\)
Thus, D. 490 minutes
Thanks,
diameter = 14
height = 20
\(\pi * t = \frac{1}{2}*\frac{14}{2}*20*\pi\)
Thus, D. 490 minutes
Thanks,
