Question

The Earth's rading is 6371km. The order
magnitude of the Earth's radius
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Answer 1

Answer:

Order of magnitude is usually written as 10 to the nth power. The represents the order of magnitude.

e.g., if we write a number X in such a way that

X = m × 10^n then n is order of magnitude.

here, 6371 km = 6371000 m

6371000 = 6.371 × 10^6

we see, 6.371 ≥ √10

so, 0.6371 × 10^7

, √10/10 ≤ 0.6371 ≤ √10

7 is our order of magnitude.