Question
A rectangular tank is filled with water to a height of 10 cm. Its rectangular base measures 25 cm by 10 cm. When 2.5 litres of water are poured into the tank, the water level rises to 56 of the height of the tank. Find the height of the tank.
3 m

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A rectangular tank is filled with water to a height of 10 cm. Its rectangular base measures 25 cm by 10 cm. When 2.5 litres of water are poured into the tank, the water level rises to 56 of the height of the tank. Find the height of the tank.