Posted by **Jecce** on Monday, July 21, 2008 at 5:10pm.

The circumference of the earth is 25,000 mi at the equator. What is the circumference in kilometers? in meter?

-- I really don't understand how to concer this. Please help!

- Chemistry -
**Ms. Sue**, Monday, July 21, 2008 at 5:15pm
1 mile = about 1.61 km.

Multiply: 25,000 * 1.61 = ? km

1 km = 1,000 m

Multiply your km answer by 1,000.

- Chemistry -
**Ms. Sue**, Monday, July 21, 2008 at 5:18pm
To be more accurate for the meters --

1 mile = 1 609.344 meters

Multiply: 25,000 * 1,609.344 = ? m

- Chemistry -
**Jecce**, Monday, July 21, 2008 at 5:23pm
ok um im still a little confused.

is kg and km the same thing as kilometers?

and...

are those the steps you gave me to figure it out?

- Chemistry -
**Ms. Sue**, Monday, July 21, 2008 at 5:33pm
kg = kilogram (measures mass)

km = kilometer (measures distance)

Yes. Follow the steps I gave you to find the answers.

- Chemistry -
**Ms. Sue**, Monday, July 21, 2008 at 5:43pm
The more accurate answer is 40,233,600 meters. But many teachers would probably accept the other answer, also.

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