Answer:
The height of the trapezoid = 45.5 cm
Step-by-step explanation:
Here, the length of the base = 131 cm
The length of the shorter side = 105 cm
Let us assume the height = h
Also, area of the trapezoid = 5,369 sq. cm
Now, AREA OF THE TRAPEZOID =
or, h = 45.5 cm
Hence the height of the trapezoid = 45.5 cm
From the graph it seems to be around the area of 10%.
So,
18,000 * 0.10 = $1,800
628.3 cm
The window has a semicircle shape = half of a circle
Perimeter of the window = ½(πr²)
Radius (r) = 20 cm
Plug in the value
Perimeter of the window = ½(π*20²)
= ½(π*400)
Perimeter of the window = 628.31853 ≈ 628.3 cm (nearest tenth)