Question 311032
The area of the pool is A = 16*16 = 256 

The area of the rubber floor is the same A=256


Let x = the width of the rubber covering.


Adding up the rubber area by breaking it up into 4 pieces (try drawing a picture to visualize it), we find:

16x + 16x + (16-2x) + (16-2x) = 256
32x + 32 - 4x = 256
28x = 224
x = 8


If you need a picture of it, let me know.