The equatorial radius of Mars is 3,394 km. Which of the following would be a reasonable estimate for the equatorial radius of Mars?

I don't know that options but ...

if we are rounding to the thousands, then the answer would be 3,000

if hundreds, the answer is 3,400

if tens: 3,390

If ones: 3,390

Step-by-step explanation:

round each number up or down based upon what the digit is.

The answer is 3 * 103 km.

Step-by-step explanation:

This is the correct answer on Study Island. Good luck! : )