Posted by **Austin** on Monday, February 23, 2009 at 6:52pm.

What is the area and circumference of a circle with a radius of 3in.

- circles -
**Willow**, Monday, February 23, 2009 at 7:15pm
Like I said with awl, I found the circumference forumla, which is:

c = pi times diameter

OR

c = 2 times pi times radius

I can't find the area formula. :(

Just place in 3 where I said "radius."

Hope I helped! :)

- circles -
**Ms. Sue**, Monday, February 23, 2009 at 7:17pm
Area = pi * radius squared

A = pi*r^2

A = 3.14 * 9

A = 28.26 square inches

## Answer this Question

## Related Questions

- MATH HOMEWORK - Find the circle circumference and circle area with a circles ...
- Circumference and Area of Circles - can someone help me with these:Find the ...
- Algebra - The Circumference and area of a circle of radius r are givin by 2 [pie...
- GEOMETRY(CIRCLE) - Three circles with different radii have their centers on a ...
- math gre question - in an infinite series of circles the radius of the second ...
- Geometry - A circle with a radius of 1/2 ft is dilated by a scale factor of 8. ...
- 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 ...
- mathematics,physics,life science,LO,afrikaans - A number of circles are given ...
- Math - The area of a rectangle is shown below The area of the rectangle is 56 ...

More Related Questions