Question

The diameter of the planet Mercury is 4.87×103 kilometers. The diameter of the planet Venus is 1.21×104kilometers. The diameter of the planet Earth is 1.28×104 kilometers. The diameter of Mars is 6.79×103 kilometers. Which planet has the smallest diameter?

Question 2 options:

Mars


Mercury


Venus


Earth

Answer 1

Answer: Venus

Explanation:

Answer 2

• Mercury, then Mars

Explanation:

Given diameters of planets:

• Mercury ⇒ 4.87 × 10³ km = 4 870 km
• Venus ⇒ 1.21 × 10⁴ km = 12 100 km
• Earth ⇒ 1.28 × 10⁴ km = 12 800 km
• Mars ⇒ 6.79 × 10³ km = 6 790 km

Compared, we see the smallest value belongs to Mercury

The second smallest planet is Mars