The area of the South China Sea is 6.963 × 106 km2. The area of the Artic Ocean is 1.4056 × 107 km2. Find the total area. Write the final answer in scientific notation with the correct number of significant digits.

Question

a 2.1019 × 107 km2
b 7.09 × 106 km2
c 2.102 × 107 km2
d 7.093 × 1013 km2

Answer 1

To find the total area, we need to add the areas of the South China Sea and the Arctic Ocean.

Area of the South China Sea = 6.963 × 10^6 km^2
Area of the Arctic Ocean = 1.4056 × 10^7 km^2

Adding these values, we get:
6.963 × 10^6 + 1.4056 × 10^7 = 2.10296 × 10^7 km^2

To express this answer in scientific notation with the correct number of significant digits, we round to the appropriate number of decimal places. In this case, we round to one decimal place. Therefore, the final answer is:

2.1 × 10^7 km^2

So the correct option is c) 2.102 × 10^7 km^2.