Question

The radius of Earth's orbit is approximately 15,000,000,000 meters. The radius of Mercury's orbit is 5.8 × 109 meters. What is the difference of their radii?

A.4.3 × 1010



B.4.3 × 1011



C.9.2 × 109



D.9.2 × 1010



E.9.2 × 1011

Answer 1

Answer: C. 9.2 × 10⁹

Explanation:

Answer 2

15,000,000,000 = 15 × 10⁹

15 × 10⁹ - 5.8 × 10⁹ = 9.2 × 10⁹ m

Answer: C. 9.2 × 10⁹ m