You are in charge of regulating the temperature of the swimming pool for the next Olympic games. The water in the pool fills a volume of 25 m x 50m x 2m and the water should be kept between 25 and 27 degrees Celsius. Over the past 2 weeks, there has been a heat wave and the temperature of the pool increased to 29 degrees Celsius. Your boss suggests that you put ice in the pool to cool it down. if you want to do this, how much ice ( in kg) will you need?