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Crank
3 years ago
12

The U.S. quarter has a mass of 5.67 g and is approximately 1.55 mm thick.How many quarters would have to be stacked to reach 575

ft, the height of the Washington Monument?How much would this stack weigh?How much money would this stack contain?How much money would this stack contain?The US National Debt Clock showed the outstanding public debt to be $11,687,233,914,811.11 on August 19, 2009. How many stacks like the one described would be necessary to pay off this debt?
Mathematics
1 answer:
slava [35]3 years ago
7 0
575 ft = 575 · 304.8 = 175,260 mm
Number of the coins ( quarters ) in this stack:
175,260 : 1.55 = 113,071
The weight of this stack:
113,071 · 5.67 g = 651,288.26 g = 651.28896 kg
It contains:
113,071 · $0.25 = $28,267.75
$11,687,233,914,811.11 : $28,267.75 = 413,447,618.4 stacks like one described would be necessary to pay US debt.
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