The area of the east china sea is 1.249 × 106 km2. the area of the pacific ocean is 1.6525 × 108 km2. find the total area. write the final answer in scientific notation with the correct number of significant digits. 1.66499 × 108 km2 1.665 × 108 km2 2.9015 × 1014 km2 2.902 × 1014 km2