Posted by **awl** on Monday, February 23, 2009 at 6:56pm.

What is the circumference and the area of a circle with a radius of 9.3mm.

- math -
**Willow**, Monday, February 23, 2009 at 7:09pm
I don't remember the equations exactly, but I know there are equations to find that. Just go an a search engine and type in "circumference equation" or "area equation" and you'll find it.

- Read this first! I found the formula for circumference. -
**Willow**, Monday, February 23, 2009 at 7:13pm
The circumference formula is:

c = pi times diameter

OR

c = 2piradius

Sorry, I don't know how to make a pi symbol on the keyboard. :)

I couldn't find the area formula... but just place 9.3 in where I said radius.

Hope I helped! :)

- math -
**awl**, Monday, February 23, 2009 at 7:17pm
Thanks Willow

- math -
**Damon**, Monday, February 23, 2009 at 7:31pm
area of circle = pi r^2

- You're welcome! -
**Willow**, Monday, February 23, 2009 at 7:59pm
:)

## Answer this Question

## Related Questions

- Algebra - The Circumference and area of a circle of radius r are givin by 2 [pie...
- math - I'm asked to find the circumference of a circle to the nearest tenth and ...
- math - the radius of a circle when the numeric values of the circumference and ...
- Geometry - A circle with a radius of 1/2 ft is dilated by a scale factor of 8. ...
- MATH HOMEWORK - Find the circle circumference and circle area with a circles ...
- math - The area of circle c is 81 pi . if the radius of the circle is doubled, ...
- Circumference and Area of Circles - can someone help me with these:Find the ...
- Math - 23.What is the approximate circumference of a circle with a radius of 6 ...
- Computer Science (Basics) - public class Circumference { /** * @param args */ ...
- math - Okay. So i'm doing this project for my geometry class about different ...

More Related Questions