Answer:
58 square feet
Step-by-step explanation:
The room is already broken down into two smaller rectangles.
The smaller of the two measures 4 ft by 2 ft.
, so substitute 4 for
and 2 for
.
(smaller rectangle)
, or
.
(smaller rectangle) 
The larger measures 10 ft by 5 ft, so using the same method, multiply
times
.
(larger rectangle)
, or
.
(larger rectangle) 
Add the two rectangles' areas together to find the total area of the room.
8 + 50 = 58