Area and circumference of a circle.
By- Isabella Plumb
What Is the area and circumference of a circle and why do we use it?
The circle to the left is called circle A since the center is at point A. If you measure the
distance around a circle and divide it by the distance across the circle through the center, you will always come close to a particular value,
depending upon the accuracy of your measurement. This value is approximately 3.14159265358979323846... We use the Greek letter to represent this value. The number
goes on forever.
Pi is the ratio of the circumference of a circle to the diameter.
for any circle, if you divide the circumference by the diameter, you get a value close to Pi. This relationship is expressed in the following formula: