SOLUTION: My question is how do you find the area of a circle and the circumference of a circle??

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Question 591907: My question is how do you find the area of a circle and the circumference of a circle??
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Letting

A = area
P = perimeter
r = radius
d = 2r = diameter

We have





The Greek letter pi (=3.14159265...) is defined as the ratio of the circle's circumference to its diameter.