The answer to the question is Ashby
To make it easier, aprox pi=3.14
area=pir^2
36=area
36=pir^2
divide both sides by pi
36/pi=r^2
36/3.14=r^2
11.464=r^2
square root both sides
3.39=r
circumfernce=2pir
r=3.39
circumfrence=2pi times 3.39
circumference=pi times 6.78
circumference=3.14 times 6.78
circumfernce=21.29
answer is
circumference=21.29 in
p = unknown number
p ≥ -12 ["p" is any number greater than or equal to -12]
The only value that can make this true is 0, because all the other numbers are less than -12.
0 ≥ -12 [0 is greater than or equal to -12]

The rule I'm using is

note how I rewrote "3" into the square root of 9, so that everything would have a square root over it, and that allows me to use that rule above.