Respuesta :

The front yard has a dimension of 80 ft x 50 ft
So the area will be

Area = 80 X 50
Area = 4,000 ft^2

The backyard has a dimension of 50 ft x 40 ft
So the area will be

Area = 50 x 40
Area = 2,000 ft^2

So the area difference is 4000-2000 = 2000 ft^2