you multiply the diameter by pi which is approximately 3.14
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2.7
Circumference of circle: 2*pi*36 = 226.195 cm rounded to 3 decimal places
A circle of radius r has a circumference of 2*Pi*r and an area of Pi*r*r, where Pi is the constant which is approximately 3.14159. Use the first equation to calculate the radius and then the second to calculate the area.
The circumference will be 7*pi feet
all you have to do is find a line with two endpoints on the circle also a diameter is the longest chord on a circle that runs through the middle of the circle.