Diameter of circle: 21/pi = 6.685 units rounded to 3 decimal places
Its diameter is: 21/pi = 6.685 inches rounded
Diameter = Circumference/pi
Circumference is pi times diameter. Diameter is circumference divided by pi. Diameter is twice the radius. Radius is half the diameter.
66 feet
Since the circumference is Pi times the diameter then divide the circumference by Pi (3.14159) to get the diameter
The circumference of a circle that has a diameter of 21 is about 65.97
If a circle has a diameter of 21 feet the circumference is: 65.97 feet (diameter x Pi = circumference).
The circumference of a 21 circle is: 65.97 (diameter x pi = circumference).
Circumference = 21*pi
Circumference = Diameter x pi = 21 pi = 65.973 inches(rounded)
The diameter is approximately 6.7
65.94
Its diameter is: 21/pi = 6.685 inches rounded
The circumference of a circle with a 21 mile diameter is 66 miles (approx).
It is: 21*pi feet
6.687089
21 inches