One other way to solve this is that 132 meters is the size of the walkway. If we add the area of the patio inside it, then we know that the entire thing is still square and the area must be a perfect square.

132 + x = perfect square.

12 = 144

13 = 169

14 = 196

15 = 225

Lets see if any of the answers even result in a perfect square:

a) 56 + 132 = 188 [Not perfect square ]

b) 64 + 132 = 196 [Perfect square]

c) 68 + 132 = 200 [Not Perfect Square]

d) 81 + 132 = 213 [Not Perfect Square]

e) 100 + 132 = 232 [Not perfect square]

The only possibility is B

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J Allen Morris

**I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a$$.