Answer:
165 km²
Step-by-step explanation:
<u>First, let us find the area of the big rectangle.</u>
Area = length × Width
Area = 15km × 13 km
Area = 195 km²
<u>Now, let us find the area of the small rectangle.</u>
Area = length × width
Area = 6 km × 5 km
Area = 30 km²
<u>And now, let us find the area of the shaded region.</u>
<em>For that, we have to subtract the area of the small rectangle from the area of the big rectangle.</em>
Area = 195 km² - 30 km²
Area = <u>165 km²</u>