The volume can be found with this general formula:
V = area·height
To solve for area, divide height from both sides to get the area by itself:
V ÷ height = area
We know our values for the volume and height. Plug them into this equation:
V = 1,258 3/5
height = 11 3/5
1,258 3/5 ÷ 11 3/5 = 108.5
The area of the floor is 108.5 square meters.