Aptitude - Volume and Surface Area - Discussion
Discussion Forum : Volume and Surface Area - General Questions (Q.No. 7)
7.
50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 4 m3, then the rise in the water level in the tank will be:
Answer: Option
Explanation:
Total volume of water displaced = (4 x 50) m3 = 200 m3.
 Rise in water level = |
 |
200 |  m 0.25 m = 25 cm. |
| 40 x 20 |
Discussion:
28 comments Page 1 of 3.
Swarna said:
9 years ago
Displacement of water by 1 man = 4 m3.
Total volume of water displaced by 50 men = (4 x 50) m3 = 200 m3.
Rise in water level in the tank is same as the height of the volume of cuboid.
Volume = Length x Breadth x Height.
Rise in water level = 200/(40 x 20) = 0.25 m or 25 cm.
Total volume of water displaced by 50 men = (4 x 50) m3 = 200 m3.
Rise in water level in the tank is same as the height of the volume of cuboid.
Volume = Length x Breadth x Height.
Rise in water level = 200/(40 x 20) = 0.25 m or 25 cm.
(15)
Dhanya said:
4 years ago
@Bavithra.
We consider the shape of the tank to be a cuboid as in the question it is given that the tank is 40m long and 20m broad. Here length and breadth are given, which indicates that the tank is cuboidal in shape.
We consider the shape of the tank to be a cuboid as in the question it is given that the tank is 40m long and 20m broad. Here length and breadth are given, which indicates that the tank is cuboidal in shape.
(1)
Suvani said:
7 years ago
Which shape of tank will be considered.
(1)
TAMIL MANI SELVAM said:
8 years ago
Guys could anyone explain me.
How they find rise in water level = volume/(l*b)?
Whether any formula is there to find out rise of water level?
How they find rise in water level = volume/(l*b)?
Whether any formula is there to find out rise of water level?
(1)
Anshik said:
2 decades ago
how have they taken out the rise in water level......
(1)
Sachin said:
8 years ago
Why it is mentioned as m^3?
(1)
Akhil said:
8 years ago
Thanks @Swarna.
Palash said:
3 weeks ago
Please give the clear explanation.
Palash said:
3 weeks ago
Where does 4 * 50 came from, 50 is the number of man not a unit.
Water displacement is given, which means the difference of volume is given,
And the rise of the water level means the difference in height.
4m^3 = 40 * 20 * (height difference).
Rise of water level = 0.5 cm.
Water displacement is given, which means the difference of volume is given,
And the rise of the water level means the difference in height.
4m^3 = 40 * 20 * (height difference).
Rise of water level = 0.5 cm.
Bavithra said:
5 years ago
Why not we consider a cylindrical shape tank? Then the volume for the cylinder is different.
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