# Math

posted by .

Needing SERIOUS help with circumference and area circle-wise. Help? I'm not really sure where I'm messing up at, but could someone explain all the forumula stuff with area to me in layman's terms?

• Math -

Circumference is the distance around the circle. The circumference equals pi times the diameter.

Example for a circle with a 4 cm diameter:

C = pi * d
C = 3.14 * 4
C = 12.56 cm

The area of a circle equals pi * radius squared.

Example for a circle with a radius of 3 cm:

A = pi * r^2
A = 3.14 * 9
A = 28.26 square centimeters

http://www.1728.com/diamform.htm

## Similar Questions

1. ### Circumference and Area of Circles

can someone help me with these:Find the radius, diameter and circumference of a circle with an area of 64 cm2. Write your answers as decimals rounded to the nearest hundredth. Find the circumference and area of a circle that has a …
2. ### serious math help!!!!!!!!!!!

Explain an easy way to estimate the area and circumference of a circle if you know the radius or diameter
3. ### math

I'm asked to find the circumference of a circle to the nearest tenth and the area of the same circle to the nearest hundredth. The circle has a diameter of 30 and a radius of 15. I got a circumference of 94.2 and an area of 188.48cm2 …

circle A has a raduis that is twice the length og the raduis of circle B. Which is an accurate statement about the relationship of these areas of circle A and B and y?
5. ### math

my math homework tells me to find the area of a circle using it's circumference. the circumference given was 6π yd. (6 pi yard). can someone explain to me how to find the area?
6. ### Math

Circle X has an area of 36pie, and a circle Y has an area of 18pie. What is the ratio of the circumference of X to the circumference of Y.
7. ### math

The area of circle c is 81 pi . if the radius of the circle is doubled, what is the circumference of the new circle ?
8. ### Geometry

A circle with a radius of 1/2 ft is dilated by a scale factor of 8. Which statements about the new circle are true?
9. ### Math

A circle has the circumference 28.26cm. What is the area of the circle?
10. ### math

my math homework tells me to find the area of a circle using it's circumference. the circumference given was. can someone explain to me how to find the area?

More Similar Questions

Post a New Question