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Question

A cylindrical jar is 20cm high with internal diameter 7cm. An iron cube of edge 5cm is immersed in the jar completely in . the water which was originally 12cm high. Find the rise inthe level of water.

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Solution

Volume of water displaced=Volume of the cube.
The radius of the cylinder=72=3.5cm
πr2h=125
227×3.52h=125
38.5h=125
h=12538.5=3.25cm
The water will rise by 3.25cm
And the new height of water will be 12+3.25=15.25cm.

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