The correct option is A 2,400 square feet
Area of the swimming pool for adults
= Length × Width
= 50×30
= 1,500 square feet
Since the kids' swimming pool has equal sides, it is a square.
Area of the swimming pool for kids
= Side × Side
= 30×30
= 900 square feet
Sum of the areas of the swimming pool for adults and kids = 1500 + 900
= 2,400 square feet