The closest distance between Earth and Venus in their orbits is about m

Other · Multi-part · AoPS · Mathematics · Follow the Rules · Exponents

Problem

The closest distance between Earth and Venus in their orbits is about 3.8×1093.8 \times 10^9 m. The closest distance between Venus and Mercury in their orbits is about 7.7×1097.7 \times 10^9 m. A spacecraft is sent from Earth to Venus, waits for the opportune time, then travels on to Mercury. (1) Find the minimum distance the spacecraft must travel. (2) Discuss the assumptions you have made in your answer.

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