Answer:
(15 ft - 4 ft) * (14 ft - 6 ft)
Explanation:
The shaded area is a rectangle.
area of rectangle = length * width
Length of outer rectangle = 15 ft
Length of shaded rectangle = 15 ft - 4 ft
Width of outer rectangle = 14 ft
Width of shaded rectangle = 14 ft - 6 ft
Area of shaded rectangle = length * width = (15 ft - 4 ft) * (14 ft - 6 ft)