There are only two sides given. Two sides cannot form a polygon so it must be assumed that the shape is lenticular (shaped like a lens) and then, its perimeter is 2m 65cm + 1m 80cm = 4m 45cm.
76 plus 54 plus 92 plus 88 plus 76 plus 88 plus 75 plus 93 plus 92 plus 68 plus 88 plus 76 plus 76 plus 88 plus 80 plus 70 plus 88plus 72 equal 1,440
The answer is 672.
27x3+6=87.
132
It is 77
102
That is 27 x 9 = 243
189
43
248.23247
120