Convert Earth's Radius of 6.37x10^6 to Circumference in km - Help Jason

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  • Thread starter Thread starter Darkhrse99
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Discussion Overview

The discussion revolves around converting the Earth's radius of 6.37 x 10^6 meters into its circumference in kilometers. Participants explore the necessary formulas and calculations involved in this conversion process.

Discussion Character

  • Homework-related

Main Points Raised

  • Jason initially attempts to convert the Earth's radius from meters to kilometers, resulting in 6.37 x 10^3 km, but expresses confusion about how to calculate the circumference from this value.
  • Several participants inquire about the formula for circumference, indicating a lack of clarity on the topic.
  • One participant suggests that Jason should refer to external resources like textbooks or online sources to find the formula for circumference.
  • Jason later finds the formula and calculates the circumference as 4.00 x 10^4 km by using the radius and multiplying by Pi, but does not clarify the steps leading to this result.

Areas of Agreement / Disagreement

The discussion shows a lack of consensus on the initial understanding of the formula for circumference, with some participants questioning Jason's prior knowledge while others focus on the calculation process.

Contextual Notes

There are unresolved aspects regarding the clarity of the formula for circumference and the steps taken to arrive at the final answer, as well as the assumptions made in the calculations.

Darkhrse99
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I need to convert the Earth's radius of 6.37 x 10^6 into the km, But I need it to be the circumference in km.


I started out with 6.37x 10^6 times (1km/1000m) which gives me 6.37x 10^3. Now I need to convert to the circumference, but not sure how. The answer is 4.00x10^4. I don't see how 6.37x10^3 is going to come close to the answer. Where do I go from here?

Thanks
Jason
 
Last edited:
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What is the formula for a circumference?
 
Last edited:


Borek said:
What is formula for circumference?

I don't know?
 
I find it hard to believe that you were not taught it earlier. But if not - check in your textbook, handbook or in wikipedia, or just google it.
 
Sorry about that. I found the formula. I wasn't thinking right. By using that formula 6.37x10^3 times Pi equals 2.0000. Than i multiplied it by 2 and got 4.00x10^4.
 

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