Question 1152480
volume of first pool is the product of the 3 or 51,200 ft^3. Half full is at 25600 ft^3

volume of second pool is 9600 ft^3

That added to first pool is 35200 ft^3.

The length and width are still 80 and 40 and their product is 3200
the height is then 35200/3200=11 feet high.