The circumference of a circle is a line. Because it is a line it has no area, only length. So the area of the circumference cannot exist!
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Circumference of the circle = 7*pi feet
There is a problem here. A circle with a 7-foot diameter has a circumference of 21.99 feet, not 10 feet.If the circumference is 10 feet, that would make the diameter 3.183 feet.
Circumference = π*d = 7π = 21.99 ft
If 7 feet refers to the diameter, multiply that by pi.
A=pi r^2 A=(3.14)(7^2) A=(3.14)(49) A=153.86 feet