What if the perimeter of the table?

Ans=>12+8(pi)
If you look closely at those corners u can see those are the quarters of a circle with radius 4.
So now just add the lenghts and the circumference of that circle of radius 4
3+3+3+3+8pi

1. 8 or -82. 14 or -143. -11, -3, 0, 7, 10

The answer would be a