A outdoor swimming pool is 3.0 m wide and 10.0 m long. If the weekly evaporation is 4.0 cm, how many laters of water must be added to the pool weekly if it does not rain.???

Answer 1

Area = 30m^2=30*10^4 cm^2
30*10^4 * 4 =120*10^4 cm^3/week
there are 1000 cm^3/liter
so
120*10^1 = 1200 liters

Answer 2

if 4cm evaporation occurs again the next week even with 29mm rainfall, how many litres of water should be added to the pool