SOLUTION: A rectangular glass tank with a length of 20cm, height of 30cm, width of 25cm is half filled with water. By how much, in terms of centimetres, will the water level rise if a solid

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Question 1111455: A rectangular glass tank with a length of 20cm, height of 30cm, width of 25cm is half filled with water. By how much, in terms of centimetres, will the water level rise if a solid cylindrical piece of iron,
with a diameter of 6 cm and a length of 10 cm, is dropped into the water? The answer, rounded to two
decimal digits, is ...
[1] 0,57 cm
[2] 0,28 cm
[3] 2,26 cm
[4] 0,38 cm
l got 0.38

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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The water level rise is the volume of the cylinder divided by the area of the floor of the tank.


V%5Bcylinder%5D = pi%2A%28D%2F2%29%5E2%2Ah = 3.14%2A3%5E2%2A10 = 282.6 cm^3.


Floor_area = 20*25 = 500 cm^2.


The water level rise =  V%5Bcylinder%5D%2FFloor_area = 282.6%2F500 = 0.57 cm (rounded to two decimals).


Answer.  0.57 cm.  Option [1].

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    - Water level rise in a tank after submerging bodies
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