Question

the distance between planets varies as they move in their orbits. the minimum distance from the earth to mars is about 0.35 au. about how many kilometers is that?
○ 15,000,000 km
○ 25,000,000 km
○ 55,000,000 km
○ 70,000,000 km

Explanation:

Step1: Recall 1 AU in kilometers

1 astronomical unit (AU) = $150,000,000$ km

Step2: Calculate 0.35 AU in km

Multiply 0.35 by $150,000,000$:
$0.35 \times 150,000,000 = 52,500,000$ km

Step3: Match to closest option

52,500,000 km is closest to 55,000,000 km.

Answer:

55,000,000 km