Math CentralQuandaries & Queries


Question from Khosi:

A rectangular container is 9cm wide,17cm long and contains water to a depth of 11cm. A stone is placed in the water and the water rises 2,2cm .Find the volume of the stone

To make this work you need to assume that after the stone is placed in the water it is completely submerged and that the stone doesn't absorb any of the water. If this is so then the stone pushes water out of the way to sink to the bottom. This displaced water adds to the depth of the water in the container. In your case the displaced water forms a layer that is 9 cm by 17 cm by 2,2 cm. What is its volume?


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