Answer:
The answer to your question is: cost = $4000
Explanation:
Data
Volume = 8000 ft³
cost = $10 / square foot
Process
It's a cube then we find the length of one side
Volume = l³ = 8000
l = ∛8000
I = 20 ft
Now, calculate the area of the floor,
Area = l x l
= 20 x 20
= 400
Finally, find the cost of the floor
cost = area x price
cost = 400 x 10
= $4000