Chapter 3 - Section 3.2 - Introduction to Functions - Exercise Set - Page 143: 107

Yes, 170 meters

In the picture above, EF = DG and ED = FG. By shifting FG to the left, the perimeter of the shape is not changed, nor is it changed when EF is shifted down. As a result, the perimeter of ABCGFE is the same as the perimeter of ABCGDE. The perimeter of the figure is: $2(45) + 2(40)$ $\rightarrow$ $90 + 80$ $\rightarrow$ $170$ $meters$