Answer:
110400 sq. mi
Step-by-step explanation:
The area is approximated by a rectangle (207 x 320) sq. mi.
AND a triangle with a base of 320 mi and height = (483-207)=276 mi.
So total approximate area
=207*320 + (1/2)320(276)
=66240+44160
=110400 sq. mi.