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anonymous
 4 years ago
Suppose that the chain could go all the way around the planet. Then the chain's length would be equal to the circumference of the earth at the equator (about 24,000 miles). Assuming that the average adult arm span is 6 feet, how many people would it take to make this human chain?
A. 21,220,000
B. 20,120,100
C. 22,200,000
D. 21,120,000
anonymous
 4 years ago
Suppose that the chain could go all the way around the planet. Then the chain's length would be equal to the circumference of the earth at the equator (about 24,000 miles). Assuming that the average adult arm span is 6 feet, how many people would it take to make this human chain? A. 21,220,000 B. 20,120,100 C. 22,200,000 D. 21,120,000

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Here  how many feet are in a mile

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Here  how many feet are in a mile? (5280) Multiply that many feet times the number of miles around the earth (24000 x 5280 = 126,720,000 ft) *divide* by the 6 ft arm spans   126,720,000 ft / 6 ft = 21,120,000 people If it takes 20 seconds for the signal to reach the 60th person, that means it takes *1* second for every *3* people   divide the number of people by *3* to get the number of seconds 21,120,000 / 3 = 7,040,000 seconds Now... how many seconds are in *one* hour ? (Hint : 3,600) Divide the total number os seconds by the number of seconds in an hour 7,040,000 / 3600 = 1955 1/2 hours

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0oh...thats easier then expected..thanks

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what if they ask about the number of days? @Jerry)123gnzcraft
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