Question
Billy placed a block in an empty rectangular tank 180 cm long and 70 cm wide. He then filled the tank with water flowing from a tap at a rate of 9 ℓ per minute. It took 3 minutes to fill the tank to a depth of 7.4 cm to cover the block completely. Find the volume of the block. Express your answer in cm³.
4 m

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Billy placed a block in an empty rectangular tank 180 cm long and 70 cm wide. He then filled the tank with water flowing from a tap at a rate of 9 ℓ per minute. It took 3 minutes to fill the tank to a depth of 7.4 cm to cover the block completely. Find the volume of the block. Express your answer in cm³.