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:
26 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)
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)
Rahul said:
1 decade ago
L*b*h=Total water displaced=200(given)
now we have to find height i.e rise in the water level
h=200/L*B
H=25cm
now we have to find height i.e rise in the water level
h=200/L*B
H=25cm
Priya said:
1 decade ago
How water displacement is equal to the total volume of the tank along with the height as the rise of water?
Deepak said:
1 decade ago
@anshik
They simply used the formula l*b*h, here u need too find the height=total water /l*b
They simply used the formula l*b*h, here u need too find the height=total water /l*b
Somini said:
1 decade ago
Water displaced is only equal to the rise in water level but not to the total volume of tank.
Bavithra said:
4 years ago
Why not we consider a cylindrical shape tank? Then the volume for the cylinder is different.
Khushi said:
5 years ago
How it is 0.25? I don't understand clearly, plz explain it once.
Nisma said:
5 years ago
@Khushi.
By calculating h, we get;
h=200/20*40,
= 1/4,
= 0.25.
By calculating h, we get;
h=200/20*40,
= 1/4,
= 0.25.
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