Answer:
5-8
Step-by-step explanation:
First find total area: 22 m x 26 m = 572 m^2
then find area of pool only: 16 m x 20 m = 320 m^2
subtract area of pool from total area: 572 m^2 - 320 m^2 = 252 m^2
If you mean 720/10^3, you do 10*10*10. This equals 1000. Now, do 720/1000. This is 0.72, or 72/100, which is your answer.