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Mathematics, 22.08.2021 14:00 zahrast14

A container is made up of a hollow cone with an internal base radius of r сm and a hollow cylinder with the same base radius and an internal height of 4r cm. Given that the height of the cone is three-fifths of the height of the cylinder and 7 litres of water are needed to fill the conical part of the container completely, find the amount of water needed to fill the container completely, giving your answer in litres. G​

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