Math
posted by Anita Maureen .
Needing SERIOUS help with circumference and area circlewise. 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 
Ms. Sue
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
Respond to this Question
Similar Questions

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 … 
serious math help!!!!!!!!!!!
Explain an easy way to estimate the area and circumference of a circle if you know the radius or diameter 
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 … 
8th grade math
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? 
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? 
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. 
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 ? 
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? 
Math
A circle has the circumference 28.26cm. What is the area of the circle? 
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?