Anything from 0 to 20 units.
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Circumference = 62.8 ft so angle is 20/62.8 x 360 ie 114.6o
10
Circumference of the circle is: pi*20'
The area of circle with a circumference of 20 is: 31.83 units squared.
If the question refers to a square, then circumference = 4d, where d is the length of a side. 20 = 4d therefore d = 20/4 = 5 ft. If the question refers to a circle with a circumference (C) of 20', then C = 2πr, where r is the radius of the circle. 20 = 2πr therefore r = 20 ÷ 2π = 3.18 ft If the question refers to the circumference of a circle with radius 20', then C = 2π x 20 = 40π = 125.66 ft