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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
 one year ago
 one year 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
 one year ago
 one year ago

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Jerry)123gnzcraftBest ResponseYou've already chosen the best response.0
Here  how many feet are in a mile
 one year ago

Jerry)123gnzcraftBest ResponseYou've already chosen the best response.0
Here  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
 one year ago

babybatsBest ResponseYou've already chosen the best response.0
oh...thats easier then expected..thanks
 one year ago
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