Answer:
2000 sq. ft.
Explanation:
The parking lot is rectangle, so the area is base * height.
Looking at lower coordinates, the base is from x=100 to x = 140, so base is 40.
Looking at first coordinate pair where y = 20 and top coordinate pair where y = 100, so height is 80.
Area of parking lot = 40 * 80 = 3200
Now,
The yard is diamond shape. It can be broken down into 2 triangles. Area of triangle is given by 1/2 * base * height.
First triangle (left one):
Height will be from x = 40 to x = 60, so height is 20.
Base would be 40 to 80, so base is 40.
Area = 1/2 * 40 * 20 = 400
Second triangle (right one):
Height will be from x= 60 to x = 100, height is 40.
Base is same as first triangle, which is 40.
Area = 1/2 * 40 * 40 = 800
Area of Yard = 800 + 400 = 1200
Parking lot is bigger by 3200 - 1200 = 2000 square feet