Earth Radius Ed5E45

1. The problem asks for the radius of the Earth expressed in scientific notation. 2. The average radius of the Earth is approximately 6371 kilometers. 3. Scientific notation expresses numbers as a product of a number between 1 and 10 and a power of 10. 4. To write 6371 in scientific notation, we move the decimal point 3 places to the left: $$6371 = 6.371 \times 10^3$$ kilometers. 5. Therefore, the radius of the Earth in scientific notation is $$6.371 \times 10^3$$ kilometers.