A hexagon has 5 sides measured as 115, find the sixth side

31

Step-by-step explanation:

115 divided by 5 equals 31 and each side measures 31 so the 6th side measures 31

or

Angle sum of hexagon is 720.

So, 116*5 (5 side are given)

=580

580+x=720 (x is the sixth side of hexagon)

x=720-580

=140°