The 2 possible ways to fence in the patio are having 8x9, with the nine being the length of the wall. Because 8+8+9=26. The second way is 18x4 and the 18 being the length of the wall. Because 18+4+4=26.
The answer is 0.01. Plug this into a calculator or your phone to find the answer easily.
X is equal to 440
440/8=55
(9x-15)/4=x /*4...... 9x-15=4x........ 5x=15........ x=3
