Equator

Suppose a tourist walked all the way around the Earth along the equator. How many more metres would the tourist's hat travel than the soles of their shoes? The radius of the Earth is 6378 km, and the tourist's height is 1.7 m.

Final Answer:

x =  10.7 m

Step-by-step explanation:

$$\begin{gathered} R=6378\text{km}\to \text{m}=6378\cdot 1000\text{m}=6378000\text{m} \\ v=1.7\text{m} \\ x=x_1-x_2 \\ x=2\pi (R+v)-2\pi R \\ x=2\pi \cdot v=2\cdot 3.1416\cdot 1.7=10.7\text{m} \end{gathered}$$

Try another example