Question

Write the following numbers used in these statements in scientific notation. (Note: Some of these numbers have been rounded.)

Earth’s radius is 4,000 miles.

Answer 1

So in scientific form 4000 miles will be equal to
`4* 10^3miles`

Explanation:

We have given that radius of earth is 4000 miles

4000 miles can be written as 4×1000

We have to written 4000 miles in scientific form

We know that 1000 can be written in scientific form as
`1000=10^3`

So
`4000miles =4* 1000=4* 10^3miles`

So in scientific form 4000 miles will be equal to
`4* 10^3miles`