Question

За день человек делает в среднем 2500 шагов. Длина шага взрослого мужчины 80 см. За какое время он сможет обойти Землю по экватору,длина которого 40000 км?

Answer 1

1) 80*2500 = 200000 см = 2000 м = 2 км - проходит за 1 день 
2) 40 000 :2 = 20 000 дней - за это время обойдет Землю по экватору (больше 54 лет)

Answer 2

Calculation of Time to Walk Around the Earth's Equator

To calculate the time it would take for an adult man to walk around the Earth's equator, we need to determine the total distance he would need to cover and then divide it by his average walking speed.

Given the following information: - The average number of steps a person takes in a day is 2500. - The length of an adult man's stride is 80 cm. - The circumference of the Earth's equator is 40,000 km.

To calculate the total distance covered in one step, we need to multiply the number of steps by the length of each step: 2500 steps/day * 80 cm/step = 200,000 cm/day.

To convert the total distance covered in one day to kilometers, we divide by 100,000 (since there are 100,000 centimeters in a kilometer): 200,000 cm/day / 100,000 = 2 km/day.

Now, to calculate the number of days it would take to walk around the Earth's equator, we divide the circumference of the equator by the distance covered in one day: 40,000 km / 2 km/day = 20,000 days.

Therefore, it would take an adult man approximately 20,000 days to walk around the Earth's equator.

Please note that this calculation assumes a constant walking speed and does not take into account factors such as rest breaks, fatigue, or obstacles that may affect the actual time required.

Conclusion

An adult man, taking an average of 2500 steps per day with a stride length of 80 cm, would take approximately 20,000 days to walk around the Earth's equator, which has a circumference of 40,000 km.

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