the circumference is 3 1\2 (3 and a half)
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pi*diameter = circumference Rearrange the formula so as the diameter is the subject of the formula: diameter = circumference/pi diameter = 7/pi = 2.228169203
Circumference of the circle = 7*pi feet
7/pi = diameter
The circumference is about 22 units.
The circumference of a circle with a diameter of 7m is 21.98 m