The area of Asia is about 44600000 square kilometers. The area of Europe is about 9.94 x 10^6 square kilometers. What is the combined area of Asia and Europe? A. 1.44*10^6 sq. kilometers
B.5.454*10^6 sq kilometers
C. 1.44*10^7 sq kilometers
D. 5.454*10^7 sq kilometers