Mining wheel descent

The mining tower's wheel has a diameter of 150 cm. If the wheel turns in the same direction seventy times, how many m will the elevator cage descend?

Final Answer:

l =  330 m

Step-by-step explanation:

$$\begin{gathered} D=150\text{cm}\to \text{m}=150:100\text{m}=1.5\text{m} \\ o=2\pi r=\pi D \\ o=\pi \cdot D=3.1416\cdot 1.5\doteq 4.7124\text{m} \\ n=70 \\ l=n\cdot o=70\cdot 4.7124=330\text{m} \end{gathered}$$

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