Waterfis tank at an increasing rate of 75 litres during the first hour, 1 tres during the second hour, 225 during the third hour and so on. the size of the tank is 200 dimensions in metres 20x9*3- 540 what is the capacity of the tank? tres 540 x 1000 = 540,000 submit part 1 mark unanswered b) how long does does it take to the tank rounded up to the nearest hour? hours