Estimation Trivia

Wednesday, July 20, 2011 by PRICE Cost Research Analysts

How many golf balls would it take to circle the Earth at the equator? Submit your estimate in the comments section!

Thursday, July 21, 2011 by Marc K:: A Billion
Tuesday, August 9, 2011 by PRICE Cost Research Analysts:: Mark K is correct! According to Lawrence Weinstein and John Adam in "Guesstimation: Solving the World's Problems on the Back of a Cocktail Napkin," the answer is roughly 1 billion golfballs. The equator is about 25,000 miles long, and golf balls are about 2 inches in diameter. 25,000 miles * 5,280 feet/mile * 6 golf balls/foot = ~1 billion golf balls

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