Step-by-step explanation:
Here, given:
The area of the square floor  = 64 sq. ft
Now, as given the floor is in the shape of a square.
Let us assume the side length of the floor = k ft
Area of a square  = (Side) x (Side)
               = k x k  = 64 sq ft
⇒ k ²  =  64  = (8) ²
⇒ k  = 8 ft
Hence, 64 sq ft  = ( 8 ft) ²
Here, base  = 8 and power = 2, which is greater than 1.