a cylindrical jar is 20cm high with internal diameter 7 cm .an iron cube of edge 5 cm is immersed in the jar completely in the water which was orignally 12 cm high find the rise in the level of water.
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Volume of the cube = 5x5x5 = 125 cm³
The volume of water displaced = volume of the cube
The radius of the cylinder = 7/2 = 3.5 cm
⇒ 22/7 x (3.5)² x h = 125
38.5h = 125
h = 125/38.5 = 3.25 cm
the water will rise by 3.25 cm
the new height of water will be 12 + 3.25 = 15.25 cm
The volume of water displaced = volume of the cube
The radius of the cylinder = 7/2 = 3.5 cm
⇒ 22/7 x (3.5)² x h = 125
38.5h = 125
h = 125/38.5 = 3.25 cm
the water will rise by 3.25 cm
the new height of water will be 12 + 3.25 = 15.25 cm
zkhan1:
wrong
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