Chicago Parent was out and about at the Chocolate Fest in Long
Grove this weekend, and one of our contests was a
"Guess-how-many-gumballs-are-in-this-jar." Now, we run these pretty
frequently and we've seen our share of goofy methods. But this one,
so thoroughly un-goofy -- and, by the way, producing an answer with
a 1.1 percent margin of error, wins.
By the way, the correct answer was 803. Sadly, other people
guessed 800, so this entrant, a teenage boy, didn't win. But
somewhere in Chicagoland, a geometry teacher can rest easy.
Just to break it down:
---> C = circumference of the jar
---> H = height of the jar
---> formula for the circumference of a circle
---> calculates radius of the jar's cross-section
---> formula for volume of a cylinder (SATs, here he
---> some nifty arithmetic
---> an answer with a 1.1 percent margin of error. Not too
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