Estimate the number of steps you would have to take to walk a distance equal to the circumference of the earth. (we estimate that the length of a step for an average person is about 18 inches, or roughly 0.5 m. the radius of the earth is 6.38 ✕ 106 m.)

80,000,000 or 80 million

Step-by-step explanation:

Given : The radius of the earth =

Formula of circumference :-

, where r is the radius.

Then, the circumference of the earth will be :_

Thus , the circumference of the earth =

Also it is given that , the length of a step for an average person =  

Then, the number of steps you would have to take to walk a distance equal to the circumference of the earth :-

Hence, the estimated number of steps you would have to take to walk a distance equal to the circumference of the earth. = 80,000,000 or 80 million