A window frame is shown in Figure 1 below. The thickness of the frame and the str within the frame are small compared to the other dimensions, and do not need to accounted for separately. e method described in Section 11.3 of the Part 3 book, find the overall sions of the frame (the height and width of the window) that make the area window a maximum. each step of your working plot a graph showing the area of the window A as a Paste of the graph into your TMA. Figure 1 A window frame made up of three rectangles 1. If 4 metres of frame are used to go around the outside perimeter of the window above, calculate the show that: win in the graph you w = 2 - 125 Explain each step of your working Show that the area of the window A. can be expressed in terms of h by the quadratic equations A= 241 146/ Explain cach step of your