Question

earth has a radius of 6371 km then the order of magnitude is how man m

Answer 1

we know, Order of magnitude is usually written as 10 to the nth power. The nrepresents 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.
but we should be note that here $\frac{\sqrt{10}}{10}\leq m\leq\sqrt{10}$

here, 6371 km = 6371000 m

6371000 = 6.371 × 10^6
we see, 6.371 ≥ √10
so, we can write it 0.6371 × 10^7
now , √10/10 ≤ 0.6371 ≤ √10
now 7 is our order of magnitude.

hence, order of magnitude is $\bf{7}$

Answer 2

The Earth’s radius is 6371 km.

The order of magnitude of the Earth’s radius is 10^3 m.

The order of the magnitude will be the number that is measured with the base as 10. The order is equal to the log value.

However, the difference between the order of magnitudes is searched by the base-10 of the log scale.