Question

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. please help

Answer 1

The total area is
`1.666 * 10^8km^2` (rounded to three significant digits).

How to find the total area

Total area = {Area of East China Sea} + {Area of Pacific Ocean}

Total area =
`(1.249 * 10^6 km^2) + (1.6525 * 10^8 km^2)`

Let's express the area of the East China Sea in scientific notation with an exponent of 8

1.249 *
`10^6km^2 = 0.01249 * 10^8km^2`

Now, we can add them:

Total area = (0.01249 + 1.6525) *
`10^8 km^2`

Total area} =
`1.66599 * 10^8 km^2`

So, the total area is
`1.666 * 10^8km^2` (rounded to three significant digits).