Final answer:
To find the floor area remaining for the owner to rent out, subtract the area of the third story from the total floor area which is 295.96 square meters.
Step-by-step explanation:
To find the floor area remaining for the owner to rent out, we need to subtract the area of the third story from the total floor area.
The total floor area is 488.52 square meters, and the area of the third story is 192.56 square meters.
Subtracting these two values gives us the remaining floor area which is -
= 488.52 - 192.56
= 295.96
Thus, the area is 295.96 square meters.