Q157
The mean radius of the earth is approximately
A.
32,000 km
B.
6,400 km
AnswerC.
9,600 km
D.
12,800 km
Answer: Option B
Solution
Answer: Option B
Solution:
The Earth's mean radius is determined as the average distance from the physical center to the surface, based on a large number of samples. The value, symbolized rearth, is equal to approximately 6,371,000 meters (6.371 x 106 m). This is roughly 6,371 kilometers (km) or 3,960 statute miles.