The circumference of a circle that is 30 feet across is: 94.25 feet (diameter x Pi = circumference).
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Circumference = 30*pi feet
188.4955592 feet
The circumference of a circle with a 30 ft radius is approx 188.5 feet.
circumference = 30*pi = 94.248 feet rounded to 3 decimal places
Assuming 30 feet is the diameter, its 94.2ft