To find the area of the composite figure, let's break it down based on the provided dimensions:
-
Main Rectangle:
- Width = 7 miles
- Height = 6 miles
- Area = Width × Height = 7 miles × 6 miles = 42 square miles
-
Left Extension (Rectangle):
- Width = 3 miles (vertical height of the left side extension)
- Height = 6 miles
- Area = Width × Height = 3 miles × 6 miles = 18 square miles
-
Right Extension (Rectangle):
- Width = 1 mile
- Height = 1 mile
- Area = Width × Height = 1 mile × 1 mile = 1 square mile
Now we can combine the areas of all the rectangles:
Total Area = Area of Main Rectangle + Area of Left Extension + Area of Right Extension
Total Area = 42 + 18 + 1 = 61 square miles
It seems none of the provided choices are correct as the total computed area here is 61 square miles. If 61 square miles wasn't among the options you provided, please double-check the description or the options.