1. How many square meters does the swimming pool occupy? 60 * 20 = 1200m2

2. Tile the bottom and inner wall of the swimming pool. What is the tile area? 60*20+(60+20)*2*2=4400 square meters

3. Draw the waterline with paint at the height of1.5m on the inner wall of the eye swimming pool. How many meters is the water level line? (60+20) * 2 =160m

1. How much water is stored in the swimming pool until it reaches the water level? 60*20* 1.5= 1800 m3.