Answer:
12680 ft²
Explanation:
First we will find the area of the house and then the garage.
They're both rectangles so we should use this formula
.
Area Of The House:

Area Of The Garage:

Adding the two areas:
Now we have to add the two together to find how much of the space they take up in the yard.

Area Of The Yard:

Subtracting The Two Areas To The Yard's Area:
and that is it!