The circumference will be 7*pi feet
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you multiply the diameter by pi which is approximately 3.14
There are about 38.48 square feet in a 7' diameter circle
If its circumference is 21.98 feet then its diameter is 21.98/pi = 7 feet rounded up.
7*pie=21.99114
The area of a circle with a 7-foot diameter is: 38.48 square feet.