Answer:
The total area of the living room is

Explanation:
we know that
The total area of the living room on the coordinate plane is equal to the area of a triangle EHO plus the area of rectangle EOUS
so

we have
---> base of triangle
---> height of triangle
---> length of rectangle
--->width of rectangle
substitute the values


Remember that
Each unit on the coordinate plane represents 5 feet
so

therefore
The total area of the living room is
