Answer:
741.63km
Step-by-step explanation:
From the above question, we know the following things:
Diameter of the Earth = 12756000m
Diameter of the new planet = 5/86 of the Diameter of the Earth
Diameter of the new planet =
5/86 × 12756000m
= 741627.90698m
The diameter of the new planet = 741627.90698m
We were asked to find the diameter of the new planet in km, hence we convert from meters to kilometers
1m = 0.001km
741627.90698m =
741627.90698 × 0.001km
= 741.62790698km
Approximately = 741.63km
Therefore, the diameter of the new planet = 741.63km
