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A cylindrical tank with diameter 20in. Is half filled with water. How much will the water level in the tank rise if you place a metallic ball with radius 4in. In the tank? What causes the water level in the tank to rise? Which volume formula should be used?

 Apr 8, 2015

Best Answer 

 #1
avatar+33657 
+5

The ball will displace its own volume of water, namely (4/3)*pi*4^3 cubic inches.

This will appear as an increase in height, h, of the water in the tank such that pi*(20^2)/4*h =  (4/3)*pi*4^3

or h = (4/3)*4^4/20^2 in.

 

h=(43)×44202h=0.8533333333333333

 

so h ≈ 0.853 in.

 

 

(Note: The cross-sectional area of the tank is given by pi*diameter^2/4).

 Apr 8, 2015
 #1
avatar+33657 
+5
Best Answer

The ball will displace its own volume of water, namely (4/3)*pi*4^3 cubic inches.

This will appear as an increase in height, h, of the water in the tank such that pi*(20^2)/4*h =  (4/3)*pi*4^3

or h = (4/3)*4^4/20^2 in.

 

h=(43)×44202h=0.8533333333333333

 

so h ≈ 0.853 in.

 

 

(Note: The cross-sectional area of the tank is given by pi*diameter^2/4).

Alan Apr 8, 2015

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