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MathNet 2006 — Part 02 Question 148

Math Olympiad Vault · MathNet 2006 — Part 02

Question 148

André trains for the marathon by running laps around a circular track with radius $100~\mathrm{m}$. To cover approximately $42~\mathrm{km}$, the number of laps André needs to take is between:

A) $1$ and $10$

B) $10$ and $50$

C) $50$ and $100$

D) $100$ and $500$

E) $500$ and $1000$