Question
A rectangular container is filled with water to a height of 10 cm. Its rectangular base measures 45 cm by 12 cm. When 21.6 litres of water are poured into the container, the water level rises to 56 of the height of the container. Find the height of the container.
3 m

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A rectangular container is filled with water to a height of 10 cm. Its rectangular base measures 45 cm by 12 cm. When 21.6 litres of water are poured into the container, the water level rises to 56 of the height of the container. Find the height of the container.