Question
A rectangular tank is filled with water to a height of 8 cm. Its rectangular base measures 45 cm by 12 cm. When 21.6 litres of water are poured into the tank, the water level rises to 25 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 8 cm. Its rectangular base measures 45 cm by 12 cm. When 21.6 litres of water are poured into the tank, the water level rises to 25 of the height of the tank. Find the height of the tank.