re: Math Riddle: How much string would you add....

quote:

---

My answer is 6 whole feet.
What am i missing?

---

For starters, you're using a not very good approximation for pi in 3.14. Second, you're plugging in a bunch of numbers which misses the whole point. See foshizzle's post for a correct derivation that reveals the surprising fact that the answer is independent of the size of the sphere; that is, it's the same for a marble, a basketball, the Earth, the Sun, etc.