approx. 3,500 miles
C = 9,525 miles D = 3,032 miles
d = 0.31831 miles.
The circumference of the Moon is approximately 10,921 kilometers (6,786 miles). This measurement is based on the Moon's average diameter of about 3,474 kilometers (2,159 miles). The circumference can be calculated using the formula (C = \pi \times d), where (d) is the diameter.
Circumference of a circle is equal to pi*diameter, so if d=9miles, c=28.3miles (to 1dp).
Circumference is pi * d. Solve for d. d = Circumference / pi
The circumference of the earth in miles is about 24,901 miles. The diameter is about 7,926 miles.
The circumference of Earth at the equator is about 24,874 miles.
Circumference = pi*d. So d = Circumference/pi
The equatorial circumference of the earth is 24901.45 miles (40075.02 km).
5 miles circumference => an area of 1.99 square miles
If the area is a circle, the circumference is 0.28 miles.
The circumference of a circle with diameter d is pi*d So if d = 8mi then circumference = 25.13 mi.