1. Circumference of the Earth is approximately 24,901.0 miles (40,075 kilometers)
2. Assume the earth is a perfect sphere.
1. Feet and meters in 1 degree, 1 minute, and 1 second of arc of the Earth's circumference.
2. Miles and kilometers in 1 degree of the Earth's circumference.
3. The earth is not a perfect sphere. What is its actual shape of the Earth?
See the project "Send and receive secret messages" to see how to decrypt the answer.
The encryption shift factor is 5. The character set is: