I will pick the brainiest! Thanks! :) Please give a real answer!

37 not 100% sure

Step-by-step explanation: so we know the the measurements of some of the sides on this shape, lets find the sides we don't know first.

so the first measurement is 7.5 we can put 7.5m on the side farthest to the left because there equal lengths and we could also put 7.5 on the line that draw to make two shapes.

so that right there is 7.5x3 = 22.5

now we add the existing measurements

22.5+ 4+2+.5 = 29m

now last we have to found the measurement of the bottom line of the shape. so we know the top line is 7.5 we can add the line .5cm to the top for it to be equal in length at the bottom. so 7.5+.5= 8, therefore the bottom line is 8m

29+8= 37m

again i am not completey sure this is correct but this is what i remeber when trying to find the perimeter of a polygon. goodluck :)!

expression #3 is not equivalent. the others are.