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Slicing Pizzas, Racing Turtles, and Further Adventures in Applied Mathematics by Robert B. Banks

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11

How to Get Anywhere in About Forty-Two Minutes

Some rainy afternoon, when you have little to do, you might want to spend some time looking up the following rather interesting information. If you dug a hole straight downward from where you live, through the center of the earth, where would you come out?

If you live quite close to the intersection of Montana, Alberta, and Saskatchewan you are quite fortunate. You will come out on dry land, even though it is bleak and dreary Kerguelen Island in the south Indian Ocean.

If you live anywhere else in the continental United States, Alaska, or Canada, you'd better be ready to build a dike at the other end to keep the Indian Ocean out.

A dike is also needed if you live in Great Britain. The exit of ...

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