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   Quarter Stacking Riddle

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Topic: Quarter Stacking Riddle (Read 28620 times)

Lee McLemore
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Re: Quarter Stacking Riddle
« Reply #25 on: Mar 4^th, 2005, 12:11pm »

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One U.S. mint quarter is approximately 1/16 of an inch in thickness. Therefore, there are 16 quarters per inch and times 12 inches per foot will give you 192 quarters per foot. The height of the Empire State Building is easily found to be 1250 feet. Therefore, 192 quarters per foot times 1250 feet will give you 240,000 quarters. Wink

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Re: Quarter Stacking Riddle
« Reply #26 on: Mar 4^th, 2005, 4:16pm »

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Measurement of a sample of 10 quarters led me to value of 1/15 of an inch:

on Feb 5^th, 2004, 7:56pm, Icarus wrote:

I just measured a stack of 10 quarters with a set of calipers. The thickness was 0.663 inches, or 0.0663 inch/quarter. The official ESB website gives the height as 1,454 feet = 17,448 inches. So we have:

# of quarters * (0.0663 inches/quarter) = 17,448 inches.

Dividing by 0.0663 gives (# of quarters) = 17,448 in/(0.0663 in/quarter) [approx] 263,000.

So it would take about 263,000 quarters ([pm] 1000 or so).

However, I think the difference in height between your value and mine is a matter of definition. Your number agrees with that published by the Council on Tall Buildings and Urban Habitats, who do not include antennas and such in the height, while the ESB website may have.

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