The closest Earth comes to the sun is 1.47×10⁸ km, and Earth’s farthest distance from the sun is 1.52×10⁸ km. What is the area inside Earth’s orbit?

1. 2.23×10¹⁶ km²
2. 6.79×10¹⁶ km²
3. 7.02×10¹⁶ km²
4. 7.26×10¹⁶ km²

Earth is 1.496×10⁸ km from the sun, and Neptune is 4.490×10⁹ km from the sun. What best represents the number of Earth years it takes for Neptune to complete one orbit around the sun?

1. 10 years
2. 30 years
3. 160 years
4. 900 years